2014 Perdido Sub-Estuary Report
Field Operations Division Mobile Office Environmental Assessment Section Water Unit August 2020
Coastal Waters Monitoring Program 2014
Perdido Sub-Estuary Report
Alabama Department of Environmental Management Environmental Assessment Section Water Unit
August 2020
2014 CWMP: Perdido Sub-Estuary Report 2
TABLE OF CONTENTS
TABLE OF CONTENTS ...... 3 LIST OF ACRONYMS ...... 4 LIST OF FIGURES ...... 5 LIST OF TABLES ...... 6 INTRODUCTION ...... 7 METHODS ...... 9 RESULTS ...... 15 REFERENCES ...... 68 APPENDIX ...... 70
2014 CWMP: Perdido Sub-Estuary Report 3
LIST OF ACRONYMS
A&I Agriculture and Industry water supply use classification ADEM Alabama Department of Environmental Management CHL a Chlorophyll a CWA Clean Water Act CWMP Coastal Waters Monitoring Program DO Dissolved Oxygen F&W Fish and Wildlife MAX Maximum MDL Method Detection Limit MIN Minimum NTU Nephelometric Turbidity Units OAW Outstanding Alabama Waters PWS Public Water Supply QAPP Quality Assurance Project Plan S Swimming and Other Whole Body Water-Contact Sports SD Standard Deviation SH Shellfish Harvesting SOP Standard Operating Procedures TEMP Temperature TN Total Nitrogen TMDL Total Maximum Daily Load TP Total Phosphorus TSS Total Suspended Solids USACE United States Army Corp of Engineers USEPA United States Environmental Protection Agency
2014 CWMP: Perdido Sub-Estuary Report 4
LIST OF FIGURES
Figure 1. 2014 Perdido Stations & Impaired Waterbodies...... 12
Figure 2. Mean growing season TN measured for the trend stations in the Perdido Sub- Watershed, 2004-2014...... 17
Figure 3. Mean growing season TP measured for the trend stations in the Perdido Sub- Watershed, 2004-2014...... 20
Figure 4. Mean growing season chl a measured for the trend stations in the Perdido Sub- Watershed, 2004-2014...... 23
Figure 5. Mean growing season TSS measured for the trend stations in the Perdido Sub- Watershed, 2004-2014...... 26
Figure 6. Monthly TN concentrations measured in the Perdido Sub-Watershed, March- October 2014...... 29
Figure 7. Monthly TP concentrations measured in the Perdido Sub-Watershed, March- October 2014...... 34
Figure 8. Monthly chl a concentrations measured in the Perdido Sub-Watershed, March- October 2014...... 39
Figure 9. Monthly TSS concentrations measured in the Perdido Sub-Watershed, March- October 2014...... 44
Figure 10. Monthly DO, temperature, and salinity concentrations at 1.5 m (5 ft), or mid- depth, for the Perdido Sub-Watershed stations collected March-October 2014...... 49
Figure 11. Monthly depth profiles of dissolved oxygen, temperature, and salinity for Perdido Sub-Watershed, March-October 2014 ...... 54
2014 CWMP: Perdido Sub-Estuary Report 5
LIST OF TABLES
Table 1. 303(d) listed water bodies in the Perdido Sub-Estuary...... 11
Table 2. Descriptions for the monitoring stations in 2014 for the Perdido Sub-Watershed...... 13
Appendix Table 1. Summary of Perdido Sub-Watershed water quality data collected March-October, 2014...... 70
2014 CWMP: Perdido Sub-Estuary Report 6
INTRODUCTION
Wolf Bay, an estuary classified as an Outstanding Alabama Water (OAW), has a 69.8 mi²
watershed with tributaries such as Miflin Creek, Sandy Creek, and Wolf Creek. Wolf Bay flows into the Intracoastal Waterway and, subsequently, Perdido Bay. The Perdido Bay watershed forms
the southeastern boundary of coastal Alabama, and the Perdido Bay estuary encompasses 50 mi²
of coastal and inland portions of Alabama and Florida. The Perdido sub-watershed discharges into
the Gulf of Mexico at Perdido Pass in Orange Beach, Alabama. Major tributaries to Perdido Bay include Perdido River, Styx River, Blackwater River, the Intracoastal Waterway, and Wolf Bay.
Both of these watersheds provide valuable resources to the area including agriculture, spawning habitats for commercial fish and shellfish, and recreational activities such as boating, fishing, and
swimming.
The Alabama Department of Environmental Management (ADEM) monitored stations
within the Perdido watershed as part of the 2014 assessment under the Coastal Waters Monitoring
Program (CWMP). Implemented in 2011, the CWMP is designed to provide data to assess current
water quality conditions, identify long-term trends in water quality conditions and to develop Total
Maximum Daily Loads (TMDLs) and nutrient criteria. The program is also being used to update
protocols and methodologies to more accurately assess water quality conditions for estuaries and
coastal rivers and streams. Although the CWMP is relatively new, most sites within it have been
sampled in other programs throughout ADEM’s history, with many having been sampled since the
1970’s. Descriptions of all CWMP monitoring activities are available in ADEM’s 2017
Monitoring Strategy (ADEM 2017).
2014 CWMP: Perdido Sub-Estuary Report 7
Surface waters within Alabama are categorized according to their designated use classification and the degree to which the water quality supports its use classification. As required by Section 303(d) of the 1972 Clean Water Act (CWA), surface waters that do not meet their use classification are placed on Alabama’s 303(d) List of Impaired Waters. Once a waterbody is listed as impaired, a TMDL is implemented to take measures needed for the waterbody to meet or exceed its water quality standards. Table 1 shows a tabular listing of waterbodies that remain on the
303(d) list as impaired. Figure 1 shows a map of waterbodies within the Perdido watershed that are on the 2014 CWA 303(d) list.
The purpose of this report is to summarize data collected at fifteen stations within the
Perdido watershed during the 2014 growing season and to evaluate trends in nutrient concentrations using ADEM’s historic dataset. Monthly and/or mean concentrations of nutrients
[total nitrogen (TN); total phosphorus (TP)], algal biomass/productivity [chl a], and sediment [total suspended solids (TSS)], were compared to ADEM’s historical data.
2014 CWMP: Perdido Sub-Estuary Report 8
METHODS
Sampling stations were selected using historical data and previous assessments (Fig. 1).
Specific location information can be found in Table 2. Arnica Bay, Blackwater River, Eleven
Mile Creek, Gulf of Mexico, Intracoastal Waterway, Miflin Creek, Perdido Bay, Perdido River,
Sandy Creek, Styx River, Wolf Bay, and Wolf Creek were sampled within the Perdido watershed.
Water quality assessments were conducted monthly, bi-monthly, or quarterly March or
April-October. All samples were collected, preserved, stored, and transported according to procedures in the ADEM Field Operations Division Standard Operation Procedures (ADEM
2014), Surface Water Quality Assurance Project Plan (2014), and Quality Management Plan
(ADEM 2012).
Mean growing season, March-October, TN, TP, chl a, and TSS were calculated to evaluate water quality conditions at each site using data from 2004 through 2014. Monthly concentrations of these parameters were graphed with ADEM’s previously collected data for all stations within the focus watersheds. Monthly growing season readings of dissolved oxygen
(DO), salinity, and temperature were graphed at 1.5m (5ft), or mid-depth if less than 10ft deep, for comparison with ADEM’s water quality criteria level of 5.0 mg/L DO. Growing season profiles of DO, salinity, and temperature were also graphed to show stratification of each parameter. Chemical analysis also includes select total and dissolved metals. While summary statistics of metals analysis are presented in Appendix Table 1, all metals analyses are available through the National Water Quality Monitoring Council Water Quality Data Portal,
2014 CWMP: Perdido Sub-Estuary Report 9
https://www.waterqualitydata.us/. As Alabama’s state environmental regulatory agency, the
ADEM submits all possible surface water quality monitoring data to the EPA.
2014 CWMP: Perdido Sub-Estuary Report 10
Table 1. 303(d) listed water bodies in the Perdido Sub-Estuary.
Assessment Waterbody County Uses Causes Sources Date Downstream / Year Draft Unit ID Name of Upstream Listed TMDL Data Locations Date AL-Gulf-of- Gulf of Baldwin Shellfish Metals Atmospheric 1996- Mississippi / 1998 2020 Mexico Mexico Mobile Harvesting (Mercury) deposition 97 Florida Swimming Fish & Wildlife AL03140104- Blackwater Escambia Fish & Wildlife Metals Atmospheric 2002 AL-FL state line 2004 2020 0104-100 River (Mercury) deposition / its source AL03140106- Styx River Baldwin Swimming Fish Metals Atmospheric 2002 Hollinger Creek 2002 2020 0504-100 & Wildlife (Mercury) deposition / its source AL03140106- Styx River Baldwin Fish & Wildlife Metals Atmospheric 2002 Perdido River / 2002 2020 0507-100 (Mercury) deposition Hollinger Creek AL03140106- Blackwater Baldwin Fish & Wildlife Metals Atmospheric 2002 Perdido River / 2004 2020 0603-101 River (Mercury) deposition Narrow Gap Creek AL03140106- Perdido Baldwin Fish & Wildlife Metals Atmospheric 2005 Perdido Bay / 2006 2020
11 0703-100 River (Mercury) deposition Jacks Branch AL03140107- Arnica Bay Baldwin Shellfish Pathogens On-site wastewater 2010 Perdido Bay / 2012 2016 0204-400 Harvesting systems Bay la launch Swimming Fish & Wildlife AL03140107- Perdido Baldwin Shellfish Pathogens Collection system 2010 Suarez Point / 2012 2016 0204-302 Bay Harvesting failure On-site Lillian Bridge Swimming wastewater systems Fish & Wildlife AL03140106- Boggy Escambia Fish &Wildlife Pathogens Industrial 2004 Brushy Creek / 2006 2016 0302-201 Branch Metals Municipal Atmore WWTP
Figure 1. 2014 Perdido stations & impaired waterbodies.
303d Listed Waters and Approved TMDLs μ
2014 Perdido Bay Stations 2016 303d listed streams 2014 303d listed water
ch n ra ADEM Coastal Mixing Zone Area B y g g o B
PDBB-5
St yx r Ri e ve v r STXB-3 i R
o d i d r e P
Blackwater River BKRB-1 EMCE-3 PDBB-3
Perdido Bay PB-1
SDYB-2WO-1A MIFB-1 Mobile Bay WLFB-2 ARNB-1 IC-4 Arnica Bay IC-1A PDBB-0
GMEX-8
Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, Gulf of Mexico NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community
2014 CWMP: Perdido Sub-Estuary Report 12
Table 2. Descriptions for the monitoring stations in 2014 for the Perdido Sub-Watershed.
HUC8 County Station Number Use Classification Waterbody Name Station Description Latitude Longitude
Last two miles of Eleven Mile creek before 3140107 Baldwin EMCE-3 SH/S/F&W Eleven Mile Creek reaching Perdido Bay. 30.469528 -87.366833
3140106 Baldwin PDBB-5 F&W Perdido River Perdido River at Barrineau Park Rd. 30.69047 -87.44026 Styx River at Baldwin County Rd. 87 (near 3140106 Baldwin STXB-3 F&W Styx River Elsanor). 30.60532 -87.547 Area between mouth of river and powerline 30.490806 -87.446806 3140106 Baldwin BKRB-1 F&W Blackwater River crossing southeast of Robertsdale, AL. Perdido Bay at mid-channel south of 3140107 Baldwin PDBB-3 SH/S/F&W Perdido Bay Chambers Point. 30.4501 -87.382 13
3140107 Baldwin PB-1 SH/S/F&W Perdido Bay Perdido Bay at mid-bay at US HWY 98. 30.405 -87.4307
3140107 Baldwin MIFB-1 S/F&W Miflin Creek Miflin Creek at Co Rd20. 30.3637 -87.6027
3140107 Baldwin WO-1A F&W Wolf Creek Wolf Creek at Swift Church Rd. 30.37028 -87.62341 Sandy Creek ~50ft downstream of Co Rd 3140107 Baldwin SDYB-2 F&W Sandy Creek 20/ Miflin Rd. 30.3704 -87.6184
3140107 Baldwin WLFB-2 OAW/SH/S/F&W Wolf Bay Middle of Wolf Bay. 30.32124 -87.58962 Intracoastal Waterway in no wake zone Intracoastal between Holiday Harbor Marina and SR 3140107 Baldwin IC-4 F&W Waterway 292 bridge crossing. 30.313525 -87.436402
Table 3 (Continued).
HUC8 County Station Number Use Classification Waterbody Name Station Description Latitude Longitude
Intracoastal Waterway in Gulf Shores at 3140107 Baldwin IC-1A F&W Intracoastal Waterway HWY 59. 30.2793 -87.687 Arnica Bay between Perdido bay and 3140107 Baldwin ARNB-1 SH/S/F&W Arnica Bay Hatchet Cr. 30.315 -87.531 Perdido Bay at approx. 0.25 miles 3140107 Baldwin PDBB-0 SH/S/F&W Perdido Bay upstream of State Highway 182 bridge. 30.27968 -87.54948 1.5 miles off shore in Gulf of Mexico at Baldwin GMEX-8 SH/S/F&W Gulf of Mexico AL / FL line. 30.257645 -87.518428
14
RESULTS
Growing season mean graphs of TN, TP, chl a, and TSS are provided in this section (Figs.
2-5). Monthly graphs for TN, TP, chl a, TSS, DO, temperature, and salinity are also provided
(Figs. 6-10). Depth profile graphs of DO, temperature, and salinity appear in Fig. 11. Summary statistics of all data collected during 2014 are presented in Appendix Table 1. The table contains the minimum, maximum, median, mean, and standard deviation of each parameter analyzed.
Stations with the highest concentrations of nutrients, chlorophyll, and TSS are noted in the paragraphs to follow. Though stations with the lowest concentrations may not always be mentioned, review of the graphs that follow will indicate these stations that may be potential candidates for reference waterbodies and watersheds.
In 2014 the highest mean TN value was in Wolf Creek (WO-1A) (Fig. 2). While the mean
TN values in WO-1A have been the highest of all stations since monitoring began, values appear to be declining. Mean growing season TN values in most other stations appear to have changed little though higher values have been observed at PDBB-0 in recent years. Monthly TN concentrations for all stations followed the historical means for the most part. (Fig. 6).
In 2014 the highest mean growing season TP value was in Wolf Creek (WO-1A) (Fig. 3).
While the mean TP values in WO-1A have been the highest of all stations since monitoring began, values appear to be declining. The highest monthly TP concentration for 2014 was in Wolf Creek
(WO-1A) in March (Fig. 7). Monthly TP concentrations in 2014 varied little from historic means in the months sampled.
Mean growing season chl a concentrations have declined in most of the Perdido Bay stations since 2009 (Fig. 4). Mean values in the Intracoastal Waterway (IC-1A) were considerably
2014 CWMP: Perdido Sub-Estuary Report 16
lower 2010-2014 than in previous years. The highest monthly chl a concentration for 2014 was in
Miflin Creek (MIFB-1) in August (Fig. 8). Most stations were at or below historic means in the
months sampled.
In 2014, during its first year sampled, the highest mean growing season TSS value was in
the Gulf of Mexico at GMEX-8 (Fig. 5). Prior to 2014 the highest mean TSS values were in Wolf
Creek (WO-1A). Monthly concentrations were highest in August 2014 at Arnica Bay (ARNB-1),
Gulf of Mexico (GMEX-8), Intracoastal Waterway (IC-4 and IC-1A), Perdido Bay (PDBB-0),
Sandy Creek (SDYB-2), and Wolf Bay (WLFB-2) and higher in October at Eleven Mile Creek
(EMCE-3). Monthly concentrations were lowest overall at Perdido River (PDBB-5) for all months
sampled (Fig. 9). Most 2014 monthly TSS concentrations were at or below historic means.
Dissolved oxygen concentrations in Sandy Creek (SDYB-2) were below the ADEM
criteria limit of 5.0 mg/L in July, August, September, and October (ADEM Admin. Code R. 335-
6-10-09) (Fig. 10). Dissolved oxygen concentrations were also below ADEM criteria in the
Blackwater River (BKRB-1), Intracoastal Waterway (IC-1A), and Perdido Bay (PDBB-3 and PB-
1) in September, as well as Miflin Creek (MIFB-1) in August, September, and October. All
measurements of DO concentrations in Arnica Bay (ARNB-1), Eleven Mile Creek (EMCE-3),
Gulf of Mexico (GMEX-8), Intracoastal Waterway (IC-4), Styx River (STYX-3), Wolf Bay
(WLFB-2), and Wolf Creek (WO-1A) were at or above the ADEM criteria. Monthly depth profiles
of dissolved oxygen, temperature and salinity can be found in Figure 11.
2014 CWMP: Perdido Sub-Estuary Report 16
Figure 2. Mean growing season TN measured for the trend stations in the Perdido Sub-Watershed, 2004-2014.
Mean TN (mg/L) 2004‐2014 3.00
2.50
2.00
1.50
1.00
17 0.50
0.00 IC‐1A WO‐1A PDBB‐5PDBB‐0 2004 2.218 2005 0.907 2.637 0.892 2006 1.121 2.568 0.612 0.765 2007 0.772 2.127 0.536 0.321 2008 0.842 1.546 0.579 0.172 2009 0.800 2.337 0.662 0.216 2010 0.784 1.807 1.177 2011 0.987 1.837 0.700 0.260 2012 0.800 1.524 0.467 0.517 2013 0.954 2.019 0.717 0.673 2014 0.905 1.785 0.574 0.530 Blank cells indicate station was not sampled during that particular year.
Figure 2. (Continued)
Mean TN (mg/L) 2004‐2014 3.00
2.50
2.00
1.50
1.00
0.50 18
0.00 MIFB‐1SDYB‐2STXB‐3WLFB‐2 2004 2005 1.163 2006 0.741 2007 0.863 2008 0.814 2009 0.854 2010 0.937 2011 1.788 0.928 0.761 2012 0.958 1.298 0.787 0.545 2013 1.166 1.237 0.866 0.999 2014 1.217 1.541 0.693 0.700
Blank cells indicate station was not sampled during that particular year.
Figure 2. (Continued)
Mean TN (mg/L) 2014 3.00
2.50
2.00
19 1.50
1.00
0.50
0.00 ARNB‐1BKRB‐1EMCE‐3GMEX‐8IC‐4PB‐1PDBB‐3 2014 0.592 0.962 0.930 0.586 0.511 0.719 0.799 Fist year sampled at these locations.
Figure 3. Mean growing season TP measured for the trend stations in the Perdido Sub-Watershed, 2004-2014.
Mean TP (mg/L) 2004‐2014 1.20
1.00
0.80
0.60
0.40
0.20 20
0.00 IC‐1A WO‐1A PDBB‐5PDBB‐0 2004 0.076 0.165 2005 0.083 0.330 0.043 2006 0.106 0.739 0.027 0.024 2007 0.110 0.769 0.046 0.018 2008 0.064 1.087 0.015 0.018 2009 0.067 0.463 0.013 0.024 2010 0.053 0.273 0.021 2011 0.105 0.713 0.017 0.027 2012 0.081 0.533 0.020 0.024 2013 0.104 0.530 0.018 0.041 2014 0.078 0.388 0.021 0.022 Blank text indicates station was not sampled during that particular year.
Figure 3. (Continued)
Mean TP (mg/L) 2004‐2014 1.20
1.00
0.80
0.60
0.40
0.20 21
0.00 MIFB‐1SDYB‐2STXB‐3WLFB‐2 2004 2005 0.051 2006 0.036 2007 0.031 2008 0.014 2009 0.017 2010 0.015 2011 0.100 0.014 0.275 2012 0.064 0.077 0.020 0.044 2013 0.069 0.074 0.025 0.061 2014 0.060 0.073 0.023 0.039 Blank cells indicates station was not sampled during that particular year.
Figure 3. (Continued)
Mean TP (mg/L) 2014 1.20
1.00
0.80
0.60 22
0.40
0.20
0.00 ARNB‐1BKRB‐1EMCE‐3GMEX‐8IC‐4PB‐1PDBB‐3 2014 0.034 0.048 0.035 0.019 0.041 0.033 0.040
Fist year sampled at these locations.
Figure 4. Mean growing season chl a measured for the trend stations in the Perdido Sub-Watershed, 2004-2014.
Mean chl a (ug/L) 2004‐2014 25.00
20.00
15.00
10.00
5.00 23
0.00 IC‐1A WO‐1A PDBB‐5PDBB‐0 2004 15.73 1.48 2005 13.64 1.10 0.50 2006 19.46 1.03 0.73 2.20 2007 12.90 1.90 1.17 1.80 2008 14.63 0.90 0.83 3.13 2009 12.65 0.67 1.13 6.43 2010 2.90 0.50 0.50 2011 3.33 0.50 0.67 1.13 2012 3.20 0.50 0.50 0.50 2013 3.13 0.50 0.50 0.50 2014 2.74 0.50 0.59 0.69 Blank cells indicate station was not sampled during that particular year.
Figure 4. (Continued)
Mean chl a (ug/L) 2004‐2014 25.00 32.7
20.00
15.00
10.00
5.00 24
0.00 MIFB‐1SDYB‐2STXB‐3WLFB‐2 2004 2005 0.67 2006 1.93 2007 1.87 2008 0.87 2009 0.50 2010 0.50 2011 32.78 0.80 2.75 2012 2.35 2.15 0.50 2.80 2013 1.68 1.85 0.87 1.23 2014 7.43 4.95 0.59 2.03 Blank cells indicate station was not sampled during that particular year.
Figure 4. (Continued)
Mean chl a (ug/L) 2014 1.80
1.60
1.40
1.20
1.00
25 0.80
0.60
0.40
0.20
0.00 ARNB‐1BKRB‐1EMCE‐3GMEX‐8IC‐4PB‐1PDBB‐3 2014 1.14 1.34 1.66 0.50 1.06 1.30 1.43
Note scale difference from other stations. First year sampled at these locations.
Figure 5. Mean growing season TSS measured for the trend stations in the Perdido Sub-Watershed, 2004-2014.
Mean TSS (mg/L) 2004‐2014 30.00
25.00
20.00
15.00
10.00
5.00 26
0.00 IC‐1A WO‐1A PDBB‐5PDBB‐0 2004 21.0 5.7 2005 20.0 2.5 7.3 2006 21.8 4.7 2.5 18.0 2007 19.9 2.5 4.5 14.3 2008 20.4 4.8 2.5 19.0 2009 22.3 2.5 4.0 11.7 2010 15.3 3.3 6.7 2011 26.7 6.2 6.2 11.7 2012 13.0 4.0 2.5 7.7 2013 17.0 2.5 3.3 13.7 2014 18.4 4.9 3.8 19.4 Blank text indicates station was not sampled during that particular year.
Figure 5. (Continued)
Mean TSS (mg/L) 2004‐2014 30.00
25.00
20.00
15.00
10.00
5.00 27
0.00 MIFB‐1SDYB‐2STXB‐3WLFB‐2 2004 2005 20.7 2006 5.3 2007 2008 4.5 2009 6.5 2010 7.0 2011 13.0 6.8 17.5 2012 10.5 8.9 3.7 12.3 2013 9.3 9.8 7.5 10.3 2014 11.8 8.4 8.3 12.5 Blank cells indicates station was not sampled during that particular year.
Figure 5. (Continued)
Mean TSS (mg/L) 2014 30.00
25.00
20.00
15.00 28
10.00
5.00
0.00 ARNB‐1BKRB‐1EMCE‐3GMEX‐8IC‐4PB‐1PDBB‐3 2014 10.9 4.6 10.6 28.6 20.4 11.3 9.5 Fist year sampled at these locations.
Figure 6. Monthly TN concentrations measured in the Perdido Sub-Watershed, March-October 2014. Each bar graph depicts changes in each station. The historic mean (1990-2014) and min/max ranges are also displayed for comparison. The “n” value equals the number of data points included in the monthly historic calculations. Flow measured at several stations.
Eleven Mile Creek (EMCE-3) Total Nitrogen (mg/L) 4.00 800 3.50 700 3.00 600 2.50 500 TN 2014 2.00 400 Flow
TN (mg/L) 1.50 300 1.00 200 Flow cf/s 0.50 100 First year of 0.00 0 data, no Mar Apr May June July Aug Sept Oct historic mean.
Perdido River (PDBB-5) Total Nitrogen (mg/L)
4.00 4500 3.50 4000 3.00 3500 TN 2014 2.50 3000 n=5 2500 Historic Mean 2.00 n=5 n=6 n=5 2000 Flow TN (mg/L) 1.50 n=6 1500 n=6 Flow cf/s 1.00 1000 0.50 500 0.00 0 Mar Apr May June July Aug Sept Oct
Styx River (STXB-3) Total Nitrogen (mg/L) 4.00 1000 3.50 3.00 800 TN 2014 2.50 n=6 600 2.00 n=6 n=5 Historic Mean n=5 n=5 n=6 400 TN (mg/L) 1.50 Flow Flow cf/s 1.00 200 0.50 0.00 0 Mar Apr May June July Aug Sept Oct
2014 CWMP: Perdido Sub-Estuary Report 29
Figure 6. (continued)
Blackwater River (BKRB-1) Total Nitrogen (mg/L) 4.00 800 3.50 600 3.00 400 2.50 TN 2014 2.00 200 Flow
TN (mg/L) 1.50 0 1.00 Flow cf/s 0.50 -200 First year of 0.00 -400 data, no Mar Apr May June July Aug Sept Oct historic mean.
Perdido Bay (PDBB-3) Total Nitrogen (mg/L) 4.00 3.50 3.00 2.50
2.00 TN 2014 n=2 n=2 n=3 n=2 Historic Mean TN (mg/L) 1.50 n=2 n=2 1.00 n=2 0.50 0.00 Mar Apr May June July Aug Sept Oct
Perdido Bay (PB-1) Total Nitrogen (mg/L) 4.00 3.50 3.00 n= 7 2.50 TN 2014 2.00 n= 6 n= 3 n= 3 n= 3 n= 2 Historic Mean
TN (mg/L) 1.50 n= 5 n= 4 1.00 0.50 0.00 Mar Apr May June July Aug Sept Oct
2014 CWMP: Perdido Sub-Estuary Report 30
Figure 6. (continued)
Miflin Creek (MIFB-1) Total Nitrogen (mg/L) 4.00 100 3.50 50 3.00 0 2.50 n= 4 n= 4 -50 TN 2014 2.00 n= 4 -100 Historic Mean n= 4 Flow TN (mg/L) 1.50 -150 1.00 -200 Flow cf/s 0.50 -250 0.00 -300 Mar Apr May June July Aug Sept Oct
Wolf Creek (WO-1A) Total Nitrogen (mg/L) 6.57 4.00 20 3.50 n=16 3.00 n=18 n=17 15 TN 2014 n=10 n=8 n=12 2.50 n=14 Historic Mean n=12 2.00 10 Flow TN (mg/L) 1.50 1.00 5 Flow cf/s 0.50 0.00 0 Mar Apr May June July Aug Sept Oct
Sandy Creek (SDYB-2) Total Nitrogen (mg/L) 4.00 150 100 3.50 n=4 3.00 50 2.50 n=4 0 TN 2014 n=4 2.00 n=4 -50 Historic Mean
TN (mg/L) 1.50 -100 Flow 1.00 -150 Flow cf/s 0.50 -200 0.00 -250 Mar Apr May June July Aug Sept Oct
2014 CWMP: Perdido Sub-Estuary Report 31
Figure 6. (continued)
Wolf Bay (WLFB-2) Total Nitrogen (mg/L) 4.00 3.50 3.00 2.50 n=3 TN 2014
2.00 Historic Mean n=4 TN (mg/L) 1.50 n=4 n=4 n=2 n=4 1.00 0.50 0.00 Mar Apr May June July Aug Sept Oct
Intracoastal Waterway (IC-4) Total Nitrogen (mg/L) 4.00 15000 3.50 3.00 10000 2.50 5000 TN 2014 2.00 0 TN (mg/L) 1.50
Flow cf/s Flow 1.00 -5000 0.50 First year of 0.00 -10000 data, no Mar Apr May June July Aug Sept Oct historic mean.
Intracoastal Waterway (IC-1A) Total Nitrogen (mg/L) 4.00 8000 n=8 3.50 6000 3.00 4000 2.50 TN 2014 2.00 n=6 n=8 n=8 2000 n=6 n=7 n=8 n=8 Historic Mean
TN (mg/L) 1.50 0 Flow 1.00 Flow cf/s 0.50 -2000 0.00 -4000 Mar Apr May June July Aug Sept Oct
2014 CWMP: Perdido Sub-Estuary Report 32
Figure 6. (continued)
Arnica Bay (ARNB-1) Total Nitrogen (mg/L) 4.00 3.50 3.00 2.50
2.00 TN 2014
TN (mg/L) 1.50 1.00 0.50 First year of 0.00 data, no Mar Apr May June July Aug Sept Oct historic mean.
Perdido Bay (PDBB-0) Total Nitrogen (mg/L) 4.00 3.50 3.00 2.50 n=7 n=4 2.00 TN 2014 Historic Mean TN (mg/L) 1.50 n=7 n=3 n=7 1.00 n=3 0.50 0.00 Mar Apr May June July Aug Sept Oct
Gulf of Mexico (GMEX-8) Total Nitrogen (mg/L) 4.00 3.50 3.00 2.50 2.00 TN 2014
TN (mg/L) 1.50 1.00 0.50 First year of 0.00 data, no Mar Apr May June July Aug Sept Oct historic mean.
2014 CWMP: Perdido Sub-Estuary Report 33
Figure 7. Monthly TP concentrations measured in the Perdido Sub-Watershed, March-October 2014. Each bar graph depicts changes in each station. The historic mean (1990-2014) and min/max ranges are also displayed for comparison. The “n” value equals the number of data points included in the monthly historic calculations. Flow measured at several stations.
Eleven Mile Creek (EMCE-3) Total Phosphorus (mg/L) 0.20 800 700 0.15 600 500 0.10 400 TP 2014 TP (mg/L) 300 Flow 0.05 200 Flow cf/s 100 First year of 0.00 0 data, no Mar Apr May June July Aug Sept Oct historic mean.
Perdido River (PDBB-5) Total Phosphorus (mg/L)
0.20 4500 4000 0.15 3500 3000 TP 2014 2500 0.10 n=6 Historic Mean 2000 TP (mg/L) n=5 n=6 n=6 1500 Flow n=5 Flow cf/s 0.05 n=5 1000 500 0.00 0 Mar Apr May June July Aug Sept Oct
Styx River (STXB-3) Total Phosphorus (mg/L) 0.20 1000
0.15 800 TP 2014 n=6 600 0.10 n=6 Historic Mean
TP (mg/L) n=5 400 n=5 n=6 Flow Flow cf/s 0.05 n=5 200 0.00 0 Mar Apr May June July Aug Sept Oct
2014 CWMP: Perdido Sub-Estuary Report 34
Figure 7. (continued)
Blackwater River (BKRB-1) Total Phosphorus (mg/L) 0.20 800 600 0.15 400 0.10 200 TP 2014
TP (mg/L) Flow 0 0.05 Flow cf/s -200 First year of 0.00 -400 data, no Mar Apr May June July Aug Sept Oct historic mean.
Perdido Bay (PDBB-3) Total Phosphorus (mg/L) 0.20
0.15
TP 2014 0.10
TP (mg/L) Historic Mean n=2 n=2 n=3 n=2 n=2 n=2 0.05
0.00 Mar Apr May June July Aug Sept Oct
Perdido Bay (PB-1) Total Phosphorus (mg/L) 13.9 14.1 0.20
0.15 n= 3 TP 2014 0.10 Historic Mean TP (mg/L) n= 5 n= 2 n= 3 n= 3 n= 3 n= 7 n= 6 0.05
0.00 Mar Apr May June July Aug Sept Oct
2014 CWMP: Perdido Sub-Estuary Report 35
Figure 7. (continued)
Miflin Creek (MIFB-1) Total Phosphorus (mg/L) 0.2 0.20 100 50 0.15 n= 4 0 -50 n= 4 TP 2014 0.10 n= 4 -100 Historic Mean TP (mg/L) n= 4 -150
Flow cf/s Flow 0.05 -200 -250 0.00 -300 Mar Apr May June July Aug Sept Oct
Wolf Creek (WO-1A) Total Phosphorus (mg/L) 2.0 1.55 1.00 20
0.80 n=17 n=16 15 TP 2014 0.60 n=10 n=18 n=12 n=12 n=14 10 Historic Mean TP (mg/L) 0.40 n=9 Flow Flow cf/s 0.20 5 0.00 0 Mar Apr May June July Aug Sept Oct Note scale difference from other stations.
Sandy Creek (SDYB-2) Total Phosphorus (mg/L) 0.20 150 n=4 n=4 100 0.15 50 TP 2014 n=4 0 n=4 Historic Mean 0.10 -50 Flow TP (mg/L) -100 0.05 -150 Flow cf/s -200 0.00 -250 Mar Apr May June July Aug Sept Oct
2014 CWMP: Perdido Sub-Estuary Report 36
Figure 7. (continued)
Wolf Bay (WLFB-2) Total Phosphorus (mg/L) 1.0 0.20
0.15 TP 2014 0.10 n=4
TP (mg/L) n=3 Historic Mean n=4 n=4 n=2 0.05
0.00 Mar Apr May June July Aug Sept Oct
Intracoastal Waterway (IC-4) Total Phosphorus (mg/L) 0.20 15000
0.15 10000
5000 TP 2014 0.10
TP (mg/L) 0 Flow Flow cf/s 0.05 -5000 First year of 0.00 -10000 data, no Mar Apr May June July Aug Sept Oct historic mean.
Intracoastal Waterway (IC-1A) Total Phosphorus (mg/L) 0.20 0.4 8000 n=8 n=8 6000 0.15 n=8 n=8 n=8 4000 n=6 n=7 0.10 2000 TP 2014
TP (mg/L) n=6 Historic Mean 0 0.05 Flow cf/s Flow -2000 0.00 -4000 Mar Apr May June July Aug Sept Oct
2014 CWMP: Perdido Sub-Estuary Report 37
Figure 7. (continued)
Arnica Bay (ARNB-1) Total Phosphorus (mg/L) 0.20
0.15
0.10
TP (mg/L) TP 2014 0.05
First year of 0.00 data, no Mar Apr May June July Aug Sept Oct historic mean.
Perdido Bay (PDBB-0) Total Phosphorus (mg/L) 0.20
0.15
0.10 TP 2014 n=3 n=7 n=3 TP (mg/L) n=4 n=7 n=7 Historic Mean 0.05
0.00 Mar Apr May June July Aug Sept Oct
Gulf of Mexico (GMEX-8) Total Phosphorus (mg/L) 0.20
0.15
0.10 TP 2014 TP (mg/L) 0.05
First year of 0.00 data, no Mar Apr May June July Aug Sept Oct historic mean.
2014 CWMP: Perdido Sub-Estuary Report 38
Figure 8. Monthly chl a concentrations measured in the Perdido Sub-Watershed, March-October 2014. Each bar graph depicts changes in each station. The historic mean (1990-2014) and min/max ranges are also displayed for comparison. The “n” value equals the number of data points included in the monthly historic calculations. Flow measured at several stations.
Eleven Mile Creek (EMCE-3) Chlorophyll a (µg/L) 25.0 800 700 20.0 600 500 g/L) 15.0
µ Chl a 2014 ( 400 a 10.0 300 Flow Flow cf/s
Chl 200 5.0 100 First year of 0.0 0 data, no Mar Apr May June July Aug Sept Oct historic mean.
Perdido River (PDBB-5) Chlorophyll a (µg/L)
25.0 4500 4000 20.0 3500 3000 Chl a 2014
g/L) 15.0 Historic Mean µ 2500 ( Flow
a 2000 10.0
n=6 1500 Flow cf/s
Chl n=6 5.0 n=5 n=5 n=5 n=6 1000 500 0.0 0 Mar Apr May June July Aug Sept Oct
Styx River (STXB-3) Chlorophyll a (µg/L) 25.0 1000
20.0 800
g/L) 15.0 600 Chl a 2014 µ ( Historic Mean a 10.0 n=5 400 n=5 n=6 n=6
Flow cf/s Flow Chl 5.0 n=5 n=6 200
0.0 0 Mar Apr May June July Aug Sept Oct
2014 CWMP: Perdido Sub-Estuary Report 39
Figure 8. (continued)
Blackwater River (BKRB-1) Chlorophyll a (µg/L) 25.0 800
20.0 600 400
g/L) 15.0
µ Chl a 2014 ( 200
a 10.0 Flow
0 Flow cf/s Chl 5.0 -200 First year of 0.0 -400 data, no Mar Apr May June July Aug Sept Oct historic mean.
Perdido Bay (PDBB-3) Chlorophyll a (µg/L) 25.0
20.0
g/L) 15.0 Chl a 2014 µ ( n=2 Historic Mean a 10.0
Chl n=2 5.0
0.0 Mar Apr May June July Aug Sept Oct
Perdido Bay (PB-1) Chlorophyll a (µg/L) 25.0
20.0
g/L) 15.0
µ Chl a 2014 ( n= 3 n= 4
a n= 4 10.0 Historic Mean n= 3 n= 4
Chl n= 2 5.0 n= 2
0.0 Mar Apr May June July Aug Sept Oct
2014 CWMP: Perdido Sub-Estuary Report 40
Figure 8. (continued)
Miflin Creek (MIFB-1) Chlorophyll a (µg/L) 30.0 100 25.0 n= 4 50 0 20.0 -50 g/L) n= 4 Chl a 2014 µ ( 15.0 -100 n= 4 Historic Mean a -150 10.0 n= 4 Flow cf/s Flow
Chl -200 5.0 -250 0.0 -300 Mar Apr May June July Aug Sept Oct Note scale difference from other stations.
Wolf Creek (WO-1A) Chlorophyll a (µg/L) 25.0 20
20.0 15 Chl a 2014 g/L) 15.0 µ ( 10 Historic Mean a 10.0 Flow n=2 n=8 Flow cf/s Chl n=10 5 5.0 n=2 n=5 n=7 n=9 n=5
0.0 0 Mar Apr May June July Aug Sept Oct
Sandy Creek (SDYB-2) Chlorophyll a (µg/L) 30.0 89.0 25.0 150 100 20.0 n=4 50 0 g/L) 15.0 Chl a 2014 µ ( n=4 -50 Historic Mean a 10.0 -100
n=4 Flow cf/s Flow
Chl n=4 -150 5.0 -200 0.0 -250 Mar Apr May June July Aug Sept Oct
2014 CWMP: Perdido Sub-Estuary Report 41
Figure 8. (continued)
Wolf Bay (WLFB-2) Chlorophyll a (µg/L) 25.0
20.0
g/L) 15.0
µ Chl a 2014 (
a 10.0 Historic Mean n=2 n=4 n=3 Chl 5.0 n=4 n=4
0.0 Mar Apr May June July Aug Sept Oct
Intracoastal Waterway (IC-4) Chlorophyll a (µg/L) 25.0 15000
20.0 10000
g/L) 15.0 5000 Chl a 2014 µ (
Flow a 10.0 0 Flow cf/s
Chl 5.0 -5000 First year of 0.0 -10000 data, no Mar Apr May June July Aug Sept Oct historic mean.
Intracoastal Waterway (IC-1A) Chlorophyll a (µg/L) 44.0 55.0 25.0 8000
20.0 6000 4000
g/L) 15.0
µ n=8 Chl a 2014 ( 2000 a 10.0 n=6 Historic Mean
n=9 0 Flow cf/s n=8 n=9 n=9 Flow
Chl n=9 5.0 n=7 -2000 0.0 -4000 Mar Apr May June July Aug Sept Oct
2014 CWMP: Perdido Sub-Estuary Report 42
Figure 8. (continued)
Arnica Bay (ARNB-1) Chlorophyll a (µg/L) 25.0
20.0
g/L) 15.0 µ (
a 10.0 Chl a 2014
Chl 5.0 First year of 0.0 data, no Mar Apr May June July Aug Sept Oct historic mean.
Perdido Bay (PDBB-0) Chlorophyll a (µg/L) 25.0
20.0 n=7
g/L) 15.0 Chl a 2014 µ (
a 10.0 Historic Mean n=3 n=7 n=3 n=7 n=4 Chl 5.0
0.0 Mar Apr May June July Aug Sept Oct
Gulf of Mexico (GMEX-8) Chlorophyll a (µg/L) 25.0
20.0
g/L) 15.0 µ ( Chl a 2014 a 10.0
Chl 5.0 First year of 0.0 data, no Mar Apr May June July Aug Sept Oct historic mean.
2014 CWMP: Perdido Sub-Estuary Report 43
Figure 9. Monthly TSS concentrations measured in the Perdido Sub-Watershed, March-October 2014. Each bar graph depicts changes in each station. The historic mean (1990-2014) and min/max ranges are also displayed for comparison. The “n” value equals the number of data points included in the monthly historic calculations. Flow measured at several stations.
Eleven Mile Creek (ECME-3) Total Suspended Solids (mg/L) 80.0 800 700 60.0 600
500 TSS 2014 40.0 400 Flow 300 Flow cf/s TSS (mg/L) 20.0 200 100 First year of 0.0 0 data, no Mar Apr May June July Aug Sept Oct historic mean.
Perdido River (PDBB-5) Total Suspended Solids (mg/L) 80.0 4500 4000 60.0 3500 3000 TSS 2014 2500 40.0 Historic Mean 2000 Flow
n=6 1500 Flow cf/s TSS (mg/L) n=5 n=6 n=5 n=5 n=6 20.0 1000 500 0.0 0 Mar Apr May June July Aug Sept Oct
Styx River (STXB-3) Total Suspended Solids (mg/L) 80.0 1000
800 60.0 n=6 TSS 2014 600 40.0 Historic Mean n=5 400 Flow n=5 n=5 n=6 Flow cf/s TSS (mg/L) n=6 20.0 200
0.0 0 Mar Apr May June July Aug Sept Oct
2014 CWMP: Perdido Sub-Estuary Report 44
Figure 9. (continued)
Blackwater River (BKRB-1) Total Suspended Solids (mg/L) 80.0 800 600 60.0 400 TSS 2014 40.0 200 Flow
0 Flow cf/s TSS (mg/L) 20.0 -200 First year of 0.0 -400 data, no Mar Apr May June July Aug Sept Oct historic mean.
Perdido Bay (PDBB-3) Total Suspended Solids (mg/L) 80.0
60.0
40.0 TSS 2014 Historic Mean n=2 n=2 n=3 n=2 n=2
TSS (mg/L) n=2 20.0 n=2
0.0 Mar Apr May June July Aug Sept Oct
Perdido Bay (PB-1) Total Suspended Solids (mg/L) 80.0
60.0 n= 6 n= 2 TSS 2014 40.0 n= 5 n= 7 n= 3 n= 3 n= 3 Historic Mean TSS (mg/L) 20.0 n= 4
0.0 Mar Apr May June July Aug Sept Oct
2014 CWMP: Perdido Sub-Estuary Report 45
Figure 9. (continued)
Miflin Creek (MIFB-1) Total Suspended Solids (mg/L) 80.0 100 50 60.0 0
-50 TSS 2014 40.0 -100 Historic Mean -150 Flow cf/s TSS (mg/L) n= 4 n= 4 n= 4 n= 4 Flow 20.0 -200 -250 0.0 -300 Mar Apr May June July Aug Sept Oct
Wolf Creek (WO-1A) Total Suspended Solids (mg/L) 80.0 20
60.0 15 TSS 2014 Historic Mean 40.0 10 n=16 Flow
n=8 Flow cf/s TSS (mg/L) n=11 n=8 n=12 n=17 n=14 20.0 n=14 5
0.0 0 Mar Apr May June July Aug Sept Oct
Sandy Creek (SDYB-2) Total Suspended Solids (mg/L) 80.0 150 100 60.0 50 0 TSS 2014 40.0 -50 Historic Mean n=4 Flow n=4 n=4 -100 Flow cf/s
TSS (mg/L) n=4 20.0 -150 -200 0.0 -250 Mar Apr May June July Aug Sept Oct
2014 CWMP: Perdido Sub-Estuary Report 46
Figure 9. (continued)
Wolf Bay (WLFB-2) Total Suspended Solids (mg/L) 80.0
60.0 TSS 2014 n=4 40.0 Historic Mean n=4
TSS (mg/L) n=4 n=4 20.0 n=2 n=3
0.0 Mar Apr May June July Aug Sept Oct
Intracoastal Waterway (IC-4) Total Suspended Solids (mg/L) 99.0 80.0 15000
10000 60.0
5000 TSS 2014
40.0 Flow 0 Flow cf/s TSS (mg/L) 20.0 -5000 First year of 0.0 -10000 data, no Mar Apr May June July Aug Sept Oct historic mean.
Intracoastal Waterway (IC-1A) Total Suspended Solids (mg/L) 80.0 8000 6000 60.0 4000 n=8 n=9 n=9 n=10 TSS 2014 40.0 2000 n=9 Historic Mean n=6 n=8 TSS (mg/L) n=7 0 Flow cf/s Flow 20.0 -2000 0.0 -4000 Mar Apr May June July Aug Sept Oct
2014 CWMP: Perdido Sub-Estuary Report 47
Figure 9. (continued)
Arnica Bay (ARNB-1) Total Suspended Solids (mg/L) 80.0
60.0
TSS 2014 40.0
TSS (mg/L) 20.0
First year of 0.0 data, no Mar Apr May June July Aug Sept Oct historic mean.
Perdido Bay (PDBB-0) Total Suspended Solids (mg/L) 80.0 n=7 60.0 n=7
40.0 TSS 2014 n=7 Historic Mean n=3 n=3
TSS (mg/L) n=4 20.0
0.0 Mar Apr May June July Aug Sept Oct
Gulf of Mexico (GMEX-8) Total Suspended Solids (mg/L) 137.0 80.0
60.0
40.0 TSS 2014
TSS (mg/L) 20.0
First year of 0.0 data, no Mar Apr May June July Aug Sept Oct historic mean.
2014 CWMP: Perdido Sub-Estuary Report 48
Figure 10. Monthly DO, temperature, and salinity concentrations at 1.5 m (5 ft), or mid-depth, for the Perdido Sub-Watershed stations collected March-October 2014. ADEM Water Quality Criteria requires a DO concentration of 5.0 mg/L at this depth (ADEM 2012). Flow measured at some stations.
Eleven Mile Creek (EMCE‐3) 35 800 30 700 DO (mg/L) 600 25 Temp (C°) 20 500 400 Salinity (ppt) 15 300 10 200 Flow cf/s DO Criteria 5 100 0 0 Flow
Perdido River (PDBB‐5) 35 5000
DO (mg/L) 30 4000 25 Temp (C°) 20 3000 15 2000 Salinity (ppt) Flow cf/s 10 DO Criteria 5 1000 0 0 Flow
Styx River (STXB‐3) 35 1000 30 800 DO (mg/L) 25 20 600 Temp (C°) 15 400
Flow cf/s DO Criteria 10 200 5 Flow 0 0
*Salinity not measured, site is above head of tide.
2014 CWMP: Perdido Sub-Estuary Report 49
Figure 10. (continued)
Blackwater River (BKRB‐1) 35 800 30 600 DO (mg/L) 25 400 20 Temp (C°) 200 15 Salinity (ppt) 10 0 Flow cf/s 5 ‐200 DO Criteria 0 ‐400 Flow
Perdido Bay (PDBB‐3) 35 30 DO (mg/L) 25 20 Temp (C°) 15 10 Salinity (ppt) 5 0 DO Criteria
Perdido Bay (PB‐1) 35 30 DO (mg/L) 25 20 Temp (C°) 15 Salinity (ppt) 10 Flow cf/s 5 DO Criteria 0
2014 CWMP: Perdido Sub-Estuary Report 50
Figure 10. (continued)
Miflin Creek (MIFB‐1) 35 100 30 50 DO (mg/L) 25 0 20 ‐50 Temp (C°) ‐100 15 ‐150 Salinity (ppt) 10 ‐200 Flow cf/s 5 ‐250 DO Criteria 0 ‐300 Flow
Wolf Creek (WO‐1A) 35 20 30 DO (mg/L) 15 25 Temp (C°) 20 10 15 Salinity (ppt)
10 5 Flow cf/s DO Criteria 5 0 0 Flow
Sandy Creek (SDYB‐2) 35 150 30 100 DO (mg/L) 25 50 Temp (C°) 20 0 ‐50 15 ‐100 Salinity (ppt)
10 ‐150 Flow cf/s 5 ‐200 DO Criteria 0 ‐250 Flow
2014 CWMP: Perdido Sub-Estuary Report 51
Figure 10. (continued)
Wolf Bay (WLFB‐2) 35 30 DO (mg/L) 25 20 Temp (C°) 15 Salinity (ppt) 10 5 DO Criteria 0
Intracoastal Waterway (IC‐4) 35 15000 DO (mg/L) 30 10000 25 Temp (C°) 20 5000 15
0 Salinity (ppt)
10 Flow cf/s 5 ‐5000 DO Criteria 0 ‐10000 Flow
Intracoastal Waterway (IC‐1A) 35 8000 30 6000 DO (mg/L) 25 4000 Temp (C°) 20 2000 15 Salinity (ppt)
0 Flow cf/s 10 DO Criteria 5 ‐2000 0 ‐4000 Flow
2014 CWMP: Perdido Sub-Estuary Report 52
Figure 10. (continued)
Arnica Bay (ARNB‐1) 35 30 DO (mg/L) 25 20 Temp (C°) 15 10 Salinity (ppt) 5 0 DO Criteria
Perdido Bay (PDBB‐0) 35 30 DO (mg/L) 25 20 Temp (C°) 15
10 Flow cf/s Salinity (ppt) 5 DO Criteria 0
Gulf of Mexico (GMEX‐8) 35 30 DO (mg/L) 25 20 Temp (C°) 15 10 Salinity (ppt) 5 0 DO Criteria
2014 CWMP: Perdido Sub-Estuary Report 53
Figure 11. Monthly depth profiles of dissolved oxygen, temperature, and salinity for Perdido Sub-Watershed, March-October 2014.
Eleven Mile Creek Eleven Mile Creek Eleven Mile Creek (EMCE-3) (EMCE-3) (EMCE-3) 2014 2014 2014 Dissolved Oxygen (mg/L) Temperature (C) Salinity (ppt) 0 5 10 15 0 102030 0 102030 0 0 0
1 1 1 54
2 2 2 Depth (m) Depth (m) Depth (m)
3 3 3
4 4 4 3/27/2014 4/16/2014 3/27/2014 4/16/2014 3/27/2014 4/16/2014 5/20/2014 6/16/2014 5/20/2014 6/16/2014 5/20/2014 6/16/2014 7/7/2014 8/6/2014 7/7/2014 8/6/2014 7/7/2014 8/6/2014 9/16/2014 10/14/2014 9/16/2014 10/14/2014 9/16/2014 10/14/2014
Figure 11. (continued)
Perdido River Perdido River Perdido River (PDBB-5) (PDBB-5) (PDBB-5) 2014 2014 2014 Dissolved Oxygen (mg/L) Temperature (C) Salinity (ppt) 05100102030 0 0.005 0.01 0.015 0 0 0
1 1 1
2 2 2 55 Depth (m) Depth (m) 3 Depth (m) 3 3
4 4 4
5 5 5 3/24/2014 4/17/2014 3/24/2014 4/17/2014 3/24/2014 4/17/2014 5/13/2014 6/16/2014 5/13/2014 6/16/2014 5/13/2014 6/16/2014 7/8/2014 8/4/2014 7/8/2014 8/4/2014 7/8/2014 8/4/2014 9/16/2014 10/7/2014 9/16/2014 10/7/2014 9/16/2014 10/7/2014
Figure 11. (continued)
Blackwater River Blackwater River Blackwater River (BKRB-1) (BKRB-1) (BKRB-1) 2014 2014 2014 Dissolved Oxygen (mg/L) Temperature (C) Salinity (ppt) 0 5 10 15 0204001020 0 0 0
1 1 1
2 2 2
3 3 3
56 4 4 4 Depth (m) Depth (m) 5 Depth (m) 5 5
6 6 6
7 7 7
8 8 8 3/27/2014 4/16/2014 3/27/2014 4/16/2014 3/27/2014 4/16/2014 5/20/2014 6/16/2014 5/20/2014 6/16/2014 5/20/2014 6/16/2014 7/7/2014 8/6/2014 7/7/2014 8/6/2014 7/7/2014 8/6/2014 9/16/2014 10/14/2014 9/16/2014 10/14/2014 9/16/2014 10/14/2014
Figure 11. (continued)
Perdido Bay Perdido Bay Perdido Bay (PDBB-3) (PDBB-3) (PDBB-3) 2014 2014 2014 Dissoved Oxygen (mg/L) Temperature (C) Salinity (ppt) 0 5 10 15 020400 102030 0 0 0
1 1 1 57 Depth (m) Depth (m) Depth (m)
2 2 2
3 3 3 3/27/2014 4/16/2014 3/27/2014 4/16/2014 3/27/2014 4/16/2014 5/20/2014 6/16/2014 5/20/2014 6/16/2014 5/20/2014 6/16/2014 7/7/2014 8/6/2014 7/7/2014 8/6/2014 7/7/2014 8/6/2014 9/16/2014 10/14/2014 9/16/2014 10/14/2014 9/16/2014 10/14/2014
Figure 11. (continued)
Perdido Bay Perdido Bay Perdido Bay (PB-1) (PB-1) (PB-1) 2014 2014 2014 Dissolved Oxygen (mg/L) Temperature (C) Salinity (ppt) 0510 020400102030 0 0 0
1 1 1
2 58 2 2 Depth (m) Depth (m) Depth (m)
3 3 3
4 4 4 3/25/2014 4/16/2014 3/25/2014 4/16/2014 3/25/2014 4/16/2014 5/12/2014 6/17/2014 5/12/2014 6/17/2014 5/12/2014 6/17/2014 7/8/2014 8/4/2014 7/8/2014 8/4/2014 7/8/2014 8/4/2014 9/17/2014 10/9/2014 9/17/2014 10/9/2014 9/17/2014 10/9/2014
Figure 11. (continued)
Miflin Creek Miflin Creek Miflin Creek (MIFB-1) (MIFB-1) (MIFB-1) 2014 2014 2014 Dissolved Oxygen (mg/L) Temperature (C) Salinity (ppt) 0 5 10 15 020400102030 0 0 0
1 1 1
2 2 2 59 Depth (m) Depth (m) 3 Depth (m) 3 3
4 4 4
5 5 5 3/25/2014 4/17/2014 3/25/2014 4/17/2014 3/25/2014 4/17/2014 5/13/2014 6/18/2014 5/13/2014 6/18/2014 5/13/2014 6/18/2014 7/8/2014 8/7/2014 7/8/2014 8/7/2014 7/8/2014 8/7/2014 9/17/2014 10/15/2014 9/17/2014 10/15/2014 9/17/2014 10/15/2014
Figure 11. (continued)
Wolf Creek Wolf Creek Wolf Creek (WO-1A) (WO-1A) (WO-1A) 2014 2014 2014 Dissolved Oxygen (mg/L) Temperature (C) Salinity (ppt) 05100 102030 0 0.02 0.04 0.06 0 0 0
1 1 1
2 2 2 60 Depth (m) Depth (m) 3 Depth (m) 3 3
4 4 4
5 5 5 3/25/2014 4/17/2014 3/25/2014 4/17/2014 3/25/2014 4/17/2014 5/13/2014 6/16/2014 5/13/2014 6/16/2014 5/13/2014 6/16/2014 7/8/2014 8/4/2014 7/8/2014 8/4/2014 7/8/2014 8/4/2014 9/16/2014 10/7/2014 9/16/2014 10/7/2014 9/16/2014 10/7/2014
Figure 11. (continued)
Sandy Creek Sandy Creek Sandy Creek (SDYB-2) (SDYB-2) (SDYB-2) 2014 2014 2014 Dissolved Oxygen (mg/L) Temperature (C) Salinity (ppt) 0 5 10 15 020400 102030 0 0 0
1 1 1
61 2 2 2 Depth (m) Depth (m) Depth (m)
3 3 3
4 4 4 3/25/2014 4/17/2014 3/25/2014 4/17/2014 3/25/2014 4/17/2014 5/13/2014 6/18/2014 5/13/2014 6/18/2014 5/13/2014 6/18/2014 7/8/2014 8/7/2014 7/8/2014 8/7/2014 7/8/2014 8/7/2014 9/17/2014 10/15/2014 9/17/2014 10/15/2014 9/17/2014 10/15/2014
Figure 11. (continued)
Wolf Bay Wolf Bay Wolf Bay (WLFB-2) (WLFB-2) (WLFB-2) 2014 2014 2014 Dissolved Oxygen (mg/L) Temperature (C) Salinity (ppt) 0510020400 102030 0 0 0
1 1 1
62 2 2 2 Depth (m) Depth (m) Depth (m)
3 3 3
4 4 4 3/25/2014 4/17/2014 3/25/2014 4/17/2014 3/25/2014 4/17/2014 5/14/2014 6/16/2014 5/14/2014 6/16/2014 5/14/2014 6/16/2014 7/8/2014 8/4/2014 7/8/2014 8/4/2014 7/8/2014 8/4/2014 9/16/2014 10/9/2014 9/16/2014 10/9/2014 9/16/2014 10/9/2014
Figure 11. (continued)
Intracoastal Waterway Intracoastal Waterway Intracoastal Waterway (IC-4) (IC-4) (IC-4) 2014 2014 2014 Dissolved Oxygen (mg/L) Temperature (C) Salinity (ppt) 0510020400 102030 0 0 0
1 1 1
2 2 2 63 Depth (m) Depth (m) 3 Depth (m) 3 3
4 4 4
5 5 5 3/24/2014 4/15/2014 3/24/2014 4/15/2014 3/24/2014 4/15/2014 5/12/2014 6/17/2014 5/12/2014 6/17/2014 5/12/2014 6/17/2014 7/10/2014 8/5/2014 7/10/2014 8/5/2014 7/10/2014 8/5/2014 9/16/2014 10/8/2014 9/16/2014 10/8/2014 9/16/2014 10/8/2014
Figure 11. (continued)
Intracoastal Waterway Intracoastal Waterway Intracoastal Waterway (IC-1A) (IC-1A) (IC-1A) 2014 2014 2014 Dissolved Oxygen (mg/L) Temperature (C) Salinity (ppt) 0510020400 102030 0 0 0
1 1 1
2 2 2
64 3 3 3 Depth (m) Depth (m) Depth (m)
4 4 4
5 5 5
6 6 6 3/26/2014 4/15/2014 3/26/2014 4/15/2014 3/26/2014 4/15/2014 5/16/2014 6/19/2014 5/16/2014 6/19/2014 5/16/2014 6/19/2014 7/9/2014 8/7/2014 7/9/2014 8/7/2014 7/9/2014 8/7/2014 9/16/2014 10/7/2014 9/16/2014 10/7/2014 9/16/2014 10/7/2014
Figure 11. (continued)
Arnica Bay Arnica Bay Arnica Bay (ARNB-1) (ARNB-1) (ARNB-1) 2014 2014 2014 Dissolved Oxygen (mg/L) Temperature (C) Salinity (ppt) 0 5 10 15 020400102030 0 0 0
1 1 1
65 2 2 2 Depth (m) Depth (m) Depth (m)
3 3 3
4 4 4 3/25/2014 4/17/2014 3/25/2014 4/17/2014 3/25/2014 4/17/2014 5/14/2014 6/16/2014 5/14/2014 6/16/2014 5/14/2014 6/16/2014 7/8/2014 8/4/2014 7/8/2014 8/4/2014 7/8/2014 8/4/2014 9/17/2014 10/9/2014 9/17/2014 10/9/2014 9/17/2014 10/9/2014
Figure 11. (continued)
Perdido Bay Perdido Bay Perdido Bay (PDBB-0) (PDBB-0) (PDBB-0) 2014 2014 2014 Dissoved Oxygen (mg/L) Temperature (C) Salinity (ppt) 05100204002040 0 0 0
1 1 1
2 2 2
66 3 3 3 Depth (m) Depth (m) Depth (m)
4 4 4
5 5 5
6 6 6 3/24/2014 4/16/2014 3/24/2014 4/16/2014 3/24/2014 4/16/2014 5/14/2014 6/16/2014 5/14/2014 6/16/2014 5/14/2014 6/16/2014 7/8/2014 8/5/2014 7/8/2014 8/5/2014 7/8/2014 8/5/2014 9/17/2014 10/8/2014 9/17/2014 10/8/2014 9/17/2014 10/8/2014
Figure 11. (continued)
Gulf of Mexico Gulf of Mexico Gulf of Mexico (GMEX-8) (GMEX-8) (GMEX-8) 2014 2014 2014 Dissolved Oxygen (mg/L) Temperture (C) Salinity (ppt) 05100204002040 0 0 0
1 1 1
2 2 2
3 3 3
4 4 4
5 5 5 67
6 6 Depth (m) Depth (m) Depth (m) 6
7 7 7
8 8 8
9 9 9
10 10 10 3/31/2014 4/16/2014 3/31/2014 4/16/2014 3/31/2014 4/16/2014 5/14/2014 6/16/2014 5/14/2014 6/16/2014 5/14/2014 6/16/2014 7/10/2014 8/5/2014 7/10/2014 8/5/2014 7/10/2014 8/5/2014 9/17/2014 10/8/2014 9/17/2014 10/8/2014 9/17/2014 10/8/2014
REFERENCES
ADEM. 2012. Quality Management Plan (QMP) For the Alabama Department of Environmental Management, Alabama Department of Environmental Management (ADEM), Montgomery AL. 58 pp.
ADEM. 2014. Quality Assurance Project Plan (QAPP) for Surface Water Quality Monitoring in Alabama. Alabama Department of Environmental Management (ADEM), Montgomery, AL. 78 pp.
ADEM. 2014. Alabama’s Water Quality Assessment and Listing Methodology, Alabama Department of Environmental Management (ADEM), Montgomery, AL. pp 7-12
ADEM. 2014 (as amended). Standard Operating Procedures #2041 In Situ Surface Water Quality Field Measurements-Temperature, Alabama Department of Environmental Management (ADEM), Montgomery, AL.
ADEM. 2014 (as amended). Standard Operating Procedures #2044 In Situ Surface Water Quality Field Measurements–Turbidity, Alabama Department of Environmental Management (ADEM), Montgomery, AL.
ADEM. 2014 (as amended). Standard Operating Procedures #2046 Photic Zone Measurement and Visibility Determination, Alabama Department of Environmental Management (ADEM), Montgomery, AL.
ADEM. 2014 (as amended). Standard Operating Procedures #2047 In Situ Surface Water Quality Field Measurements–By Datasonde, Alabama Department of Environmental Management (ADEM), Montgomery, AL.
ADEM. 2014 (as amended). Standard Operating Procedures #2061 General Surface Water Sample Collection, Alabama Department of Environmental Management (ADEM), Montgomery, AL.
ADEM. 2014 (as amended). Standard Operating Procedures #2062 Dissolved Reactive Phosphorus (DRP) Surface Water Sample Collection and Field Processing, Alabama Department of Environmental Management (ADEM), Montgomery, AL.
ADEM 2014 (as amended). Standard Operating Procedures #2063 Water Column Chlorophyll a Sample Collection and Field Processing, Alabama Department of Environmental Management (ADEM), Montgomery, AL.
2014 CWMP: Perdido Sub-Estuary Report 68
ADEM. 2017 (as amended). State of Alabama Water Quality Monitoring Strategy. Alabama Department of Environmental Management (ADEM), Montgomery, AL.
Alabama Department of Environmental Management Water Division (ADEM Admin. Code R. 335-6-10-.09). 2012. Specific Water Quality Criteria. Water Quality Program. Chapter 10. Volume 1. Division 335-6.
American Public Health Association, American Water Works Association and Water Pollution Control Federation. 1998. Standard methods for the examination of water and wastewater. 20th edition. APHA, Washington, D.C
2014 CWMP: Perdido Sub-Estuary Report 69
APPENDIX
2014 CWMP: Perdido Sub-Estuary Report 70
Appendix Table 1. Summary of Perdido Sub-Watershed water quality data collected March- October, 2014. Minimum (min) and maximum (max) values calculated using minimum detection limits when results were less than this value. Median (med), mean, and standard deviation (SD) values were calculated by multiplying the MDL by 0.5 when results were less than this value.
Parameter N Min Max Med Avg SD E
EMCE-3 Physical Temperature (°C) 7 15.4 27.5 23.1 21.9 4.6 Turbidity (NTU) 8 3.8 140.0 6.9 27.1 46.6 Total Dissolv ed Solids (mg/L) 8 41.0 1140.0 65.0 207.0 378.2 J Total Suspended Solids (mg/L) 8 < 2.0 51.0 5.0 10.6 16.5 Specific Conductance (µmhos/cm) 7 45.2 528.7 66.9 135.5 174.5 J Alkalinity (mg/L) 8 < 1.2 16.0 10.5 10.3 4.5 Monthly Stream Flow (cfs) 5 36.1 729.0 61.3 189.0 302.2 Measured Stream Flow (cfs) 5 36.1 729.0 61.3 189.0 302.2 Chemical
Dissolv ed Ox y gen (mg/L) 7 6.4 9.8 7.9 8.0 1.4 pH (SU) 7 6.0 7.6 6.3 6.4 0.6 J Ammonia Nitrogen (mg/L) 8 0.040 0.240 0.085 0.105 0.070 Nitrate+Nitrite Nitrogen (mg/L) 8 0.118 0.586 0.377 0.356 0.185 J Total Kjeldahl Nitrogen (mg/L) 8 < 0.072 1.300 0.590 0.574 0.409 J Dis Reactiv e Phosphorus (mg/L) 8 < 0.003 < 0.006 0.003 0.003 0.001 J Total Phosphorus (mg/L) 8 0.015 0.097 0.026 0.035 0.027
J CBOD-5 (mg/L) 8 < 2.0 < 2.0 1.0 1.0 0.0 J Chlorides (mg/L) 8 4.3 590.0 7.8 84.0 204.7 Biological
Chlorophy ll a (mg/m³) 8 < 1.00 5.10 0.50 1.66 1.85 J E. coli (MPN/DL) 5 10.0 570.0 25.0 152.2 239.6 J,L Enterococci (MPN/DL) 3 10 1700 21 577 973
A=S,F&W aquatic life use criterion exceeded; C=S,F&W criterion violated; E=# samples that exceeded criteria; J= estimate; L= estimate; N=# samples; Q=number of samples that have uncertain exceedances.
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Parameter NMinMaxMedAvgSDEQ
PDBB-5 Physical Temperature (°C) 6 14.8 25.1 22.0 21.3 3.6 Turbidity (NTU) 10 1.9 13.9 3.5 5.7 4.3 Total Dissolv ed Solids (mg/L) 8 31.0 66.0 39.0 41.1 11.5 J Total Suspended Solids (mg/L) 8 1.0 6.0 4.0 3.8 2.0 Specific Conductance (µmhos/cm) 6 20.7 26.4 23.6 23.8 2.1 J Hardness (mg/L) 1 5.0 J Alkalinity (mg/L) 8 1.4 4.0 3.2 3.0 1.1 Monthly Stream Flow (cfs) 8 265.0 3990.0 499.5 1086.0 1311.0 Measured Stream Flow (cfs) 8 265.0 3990.0 499.5 1086.0 1311.0 Chemical Dissolv ed Ox y gen (mg/L) 6 6.5 8.6 7.8 7.6 0.8 pH (SU) 6 3.4C 5.8 4.7 4.7 0.8 6 J Ammonia Nitrogen (mg/L) 8 < 0.011 0.050 0.020 0.023 0.015 Nitrate+Nitrite Nitrogen (mg/L) 8 < 0.017 0.357 0.243 0.202 0.144 Total Kjeldahl Nitrogen (mg/L) 8 0.190 0.720 0.285 0.372 0.210 J Dis Reactiv e Phosphorus (mg/L) 8 < 0.003 0.027 0.006 0.008 0.008 J Total Phosphorus (mg/L) 8 0.011 0.035 0.019 0.021 0.009 J CBOD-5 (mg/L) 8 < 2.0 < 2.0 1.0 1.0 0.0 J Chlorides (mg/L) 8 3.1 4.0 3.7 3.6 0.4 Total Metals Aluminum (mg/L) 1 0.374 Iron (mg/L) 1 0.907
J Manganese (mg/L) 1 0.027 Dissolved Metals J Aluminum (mg/L) 1 0.304 Antimony (µg/L) 1 < 0.015 J Arsenic (µg/L) 10.422A 1 Cadmium (µg/L) 1 < 0.087 J Chromium (µg/L) 10.745 J Copper (µg/L) 11.360A 1 Iron (mg/L) 10.481 J Lead (µg/L) 10.263A 1 J Manganese (mg/L) 10.027 J Nickel (µg/L) 10.601 Selenium (µg/L) 1 < 0.535 Silv er (µg/L) 1 < 0.538 J Thallium (µg/L) 10.034 Zinc (µg/L) 1 < 0.087 Biological
Chlorophy ll a (mg/m³) 8 < 1.00 1.20 0.50 0.59 0.25 J E. coli (MPN/DL) 8 10.0 70.0 44.5 40.5 24.5
A=S,F&W aquatic life use criterion exceeded; E=# samples that exceeded criteria; J= estimate; L=estimate; N=# samples; Q=number of samples that have uncertain exceedances.
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Parameter NMinMaxMedAvgSDEQ
STXB-3 Physical Temperature (°C) 9 16.2 24.6 22.7 21.2 3.0 Turbidity (NTU) 10 3.1 42.7 6.7 13.6 15.5 Total Dissolv ed Solids (mg/L) 8 31.0 57.0 40.0 41.4 9.6 Total Suspended Solids (mg/L) 8 5.0 11.0 9.0 8.2 2.6 Specific Conductance (µmhos/cm) 9 23.0 44.9 33.0 32.1 6.2 J Hardness (mg/L) 1 5.8 J Alkalinity (mg/L) 8 1.4 5.0 4.0 3.8 1.2 Monthly Stream Flow (cfs) 8 192.0 899.0 310.5 407.4 253.4 Measured Stream Flow (cfs) 8 192.0 899.0 310.5 407.4 253.4 Chemical Dissolv ed Ox y gen (mg/L) 9 5.9 9.5 8.1 8.1 1.0 pH (SU) 9 4.6C 6.2 5.1 5.1 0.5 8 J Ammonia Nitrogen (mg/L) 8 < 0.013 0.050 0.014 0.021 0.017 Nitrate+Nitrite Nitrogen (mg/L) 8 0.137 0.588 0.360 0.389 0.172 J Total Kjeldahl Nitrogen (mg/L) 8 < 0.051 0.530 0.380 0.304 0.196 J Dis Reactiv e Phosphorus (mg/L) 8 < 0.003 0.037 0.005 0.011 0.014 J Total Phosphorus (mg/L) 8 0.019 0.037 0.021 0.023 0.006 J CBOD-5 (mg/L) 8 < 2.0 < 2.0 1.0 1.0 0.0 J Chlorides (mg/L) 8 3.4 4.6 4.1 4.0 0.5 Total Metals Aluminum (mg/L) 1 0.596 Iron (mg/L) 1 0.797
J Manganese (mg/L) 1 0.025 Dissolved Metals J Aluminum (mg/L) 1 0.238 Antimony (µg/L) 1 < 0.015 J Arsenic (µg/L) 10.437A 1 Cadmium (µg/L) 1 < 0.087 J Chromium (µg/L) 10.666 J Copper (µg/L) 10.997A 1 Iron (mg/L) 10.400 J Lead (µg/L) 10.323A 1 J Manganese (mg/L) 10.023 J Nickel (µg/L) 10.734 Selenium (µg/L) 1 < 0.535 Silv er (µg/L) 1 < 0.538 J Thallium (µg/L) 10.016 Zinc (µg/L) 1 < 0.087 Biological Chlorophy ll a (mg/m³) 8 < 1.00 1.20 0.50 0.59 0.25 J E. coli (MPN/DL) 8 20.0 86.0 52.5 53.2 27.8
A=S,F&W aquatic life use criterion exceeded; E=# samples that exceeded criteria; J= estimate; L=estimate; N=# samples; Q=number of samples that have uncertain exceedances.
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Parameter NMinMaxMedAvgSDE
BKRB-1 Physical Temperature (°C) 10 16.7 27.2 23.8 22.9 3.8 Turbidity (NTU) 10 2.0 70.1 4.6 12.5 20.7 Total Dissolv ed Solids (mg/L) 8 55.0 6010.0 96.0 2058.6 2753.0 J Total Suspended Solids (mg/L) 8 1.0 13.0 3.0 4.6 4.0 Specific Conductance (µmhos/cm) 10 30.5 19217.0 242.7 3298.8 6283.9 J Alkalinity (mg/L) 8 < 1.0 35.0 10.5 15.6 13.7 Monthly Stream Flow (cfs) 7 -272.1 708.6 290.0 274.8 308.2 Measured Stream Flow (cfs) 7 -272.1 708.6 290.0 274.8 308.2 Chemical
Dissolv ed Ox y gen (mg/L) 10 0.6 C 9.1 6.5 6.2 2.4 1 pH (SU) 10 5.1 C 7.9 6.2 6.3 0.7 1 J Ammonia Nitrogen (mg/L) 8 < 0.013 0.110 0.045 0.047 0.034 J Nitrate+Nitrite Nitrogen (mg/L) 8 0.096 0.604 0.452 0.404 0.180 J Total Kjeldahl Nitrogen (mg/L) 8 < 0.072 1.400 0.490 0.557 0.441 J Dis Reactiv e Phosphorus (mg/L) 8 < 0.006 0.029 0.010 0.012 0.008 J Total Phosphorus (mg/L) 8 0.020 0.128 0.032 0.048 0.036 J CBOD-5 (mg/L) 8 < 2.0 < 2.0 1.0 1.0 0.0 J Chlorides (mg/L) 8 5.8 3100.0 40.5 1113.1 1509.6 Biological
Chlorophy ll a (mg/m³) 8 < 1.00 5.00 0.50 1.34 1.58 J,L E. coli (MPN/DL) 5 1.0 1000.0 13.0 209.3 442.1
L Enterococci (MPN/DL) 3 10 10 5 7 3
A=S,F&W aquatic life use criterion exceeded; E=# samples that exceeded criteria; J= estimate; L=estimate; N=# samples; Q=number of samples that have uncertain exceedances.
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Parameter NMinMaxMedAvgSDE PDBB-3 Physical Temperature (°C) 6 15.1 28.8 25.0 23.0 5.5 Turbidity (NTU) 8 5.6 78.6 6.6 16.0 25.3 Total Dissolv ed Solids (mg/L) 8 81.0 12800.0 3875.0 4788.0 5053.0 J Total Suspended Solids (mg/L) 8 2.0 32.0 7.5 9.5 9.4 Specific Conductance (µmhos/cm) 6 73.8 21086.0 3192.8 5996.4 8101.8 J Alkalinity (mg/L) 8 1.0 67.0 16.0 23.0 22.5 Chemical Dissolv ed Ox y gen (mg/L) 6 6.2 9.6 8.3 8.2 1.4 pH (SU) 6 5.6C 7.87.37.00.91 J Ammonia Nitrogen (mg/L) 8 < 0.013 0.120 0.014 0.035 0.041 Nitrate+Nitrite Nitrogen (mg/L) 8 < 0.008 0.152 0.082 0.069 0.053 J Total Kjeldahl Nitrogen (mg/L) 8 0.330 0.960 0.750 0.730 0.201 J Dis Reactiv e Phosphorus (mg/L) 8 < 0.003 0.011 0.003 0.004 0.004 J Total Phosphorus (mg/L) 8 0.021 0.117 0.028 0.040 0.032 J CBOD-5 (mg/L) 8 < 2.0 < 2.0 1.0 1.0 0.0 Chlorides (mg/L) 8 17.0 8600.0 2250.0 3042.9 3295.8 Biological Chlorophy ll a (mg/m³) 8 < 1.00 2.70 1.10 1.42 1.03 L Enterococci (COL/DL) 1 10 J,L Enterococci (MPN/DL) 7 10110102239
A=S,F&W aquatic life use criterion exceeded; E=# samples that exceeded criteria; J= estimate; L=estimate;
N=# samples; Q=number of samples that have uncertain exceedances.
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Parameter NMinMaxMedAvgSDE
PB-1 Physical Temperature (°C) 8 16.7 30.3 C 28.0 25.8 5.5 1 Turbidity (NTU) 8 2.8 48.5 4.5 10.1 15.6 Total Dissolv ed Solids (mg/L) 8 177.0 17600.0 8890.0 8381.1 6803.2 J Total Suspended Solids (mg/L) 8 < 1.0 27.0 8.5 11.3 9.2 Specific Conductance (µmhos/cm) 8 321.5 31527.3 20052.2 16650.8 13115.6 J Alkalinity (mg/L) 8 < 1.0 59.0 47.0 33.1 26.2 Chemical
Dissolv ed Ox y gen (mg/L) 8 4.7C 8.7 7.1 6.9 1.4 1 pH (SU) 8 6.6 7.9 7.5 7.3 0.5 J Ammonia Nitrogen (mg/L) 8 < 0.013 0.120 0.020 0.050 0.046 Nitrate+Nitrite Nitrogen (mg/L) 8 < 0.008 0.078 0.004 0.027 0.032 J Total Kjeldahl Nitrogen (mg/L) 8 < 0.051 1.100 0.765 0.692 0.330 J Dis Reactiv e Phosphorus (mg/L) 8 < 0.003 0.013 0.003 0.004 0.004 J Total Phosphorus (mg/L) 8 0.017 0.080 0.026 0.033 0.020 J CBOD-5 (mg/L) 8 < 2.0 < 2.0 1.0 1.0 0.0 J Chlorides (mg/L) 8 73.0 10000.0 6100.0 5056.1 3958.1 Biological
Chlorophy ll a (mg/m³) 8 < 1.00 2.90 0.95 1.30 0.95 L Fecal Coliform (COL/DL) 3 1 910 1 304 525 J,L Enterococci (MPN/DL) 7 10 60 5 13 21
A A=S,F&W aquatic life use criterion exceeded; E=# samples that exceeded criteria; J= estimate; L=estimate; N=# samples; Q=number of samples that have uncertain exceedances.
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Parameter NMinMaxMedAvgSDE MIFB-1 Physical
Temperature (°C) 6 17.1 32.2C 28.8 26.6 6.3 3 Turbidity (NTU) 8 7.1 13.5 8.2 8.8 2.1 Total Dissolv ed Solids (mg/L) 8 296.0 14800.0 10550.0 8305.8 5145.8 Total Suspended Solids (mg/L) 8 6.0 18.0 12.0 11.8 4.9 Specific Conductance (µmhos/cm) 6 497.9 31793.0 19770.4 15896.8 11916.5 Alkalinity (mg/L) 8 22.0 68.0 41.5 42.2 16.5 Monthly Stream Flow (cfs) 7 -242.4 57.1 -7.7 -46.2 124.6 Measured Stream Flow (cfs) 7 -242.4 57.1 -7.7 -46.2 124.6 Chemical
Dissolv ed Ox y gen (mg/L) 6 0.0C 7.9 5.7 5.3 2.8 1 pH (SU) 6 6.0 7.8 7.4 7.2 0.7 J Ammonia Nitrogen (mg/L) 8 < 0.013 0.200 0.008 0.042 0.067 Nitrate+Nitrite Nitrogen (mg/L) 8 0.052 0.695 0.173 0.251 0.221 J Total Kjeldahl Nitrogen (mg/L) 8 0.360 1.300 1.050 0.966 0.286 J Dis Reactiv e Phosphorus (mg/L) 8 < 0.003 0.045 0.004 0.011 0.015 J Total Phosphorus (mg/L) 8 0.043 0.088 0.058 0.060 0.015 J CBOD-5 (mg/L) 8 < 2.0 4.6 2.8 2.8 1.4 Chlorides (mg/L) 8 130.0 9400.0 6250.0 5166.2 3294.0 Biological
Chlorophy ll a (mg/m³) 8 2.40 25.00 4.60 7.42 7.48 J,L Enterococci (MPN/DL) 8 10 3600 8 474 1264
A=S,F&W aquatic life use criterion exceeded; E=# samples that exceeded criteria; J= estimate; L=estimate; N=# samples; Q=number of samples that have uncertain exceedances.
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Parameter NMinMaxMedAvgSDEQ
WO-1A Physical Temperature (°C) 6 20.6 24.6 23.5 23.1 1.4 Turbidity (NTU) 8 2.0 41.6 3.8 10.2 14.1 Total Dissolv ed Solids (mg/L) 8 65.0 88.0 73.5 74.9 8.8 J Total Suspended Solids (mg/L) 8 2.0 12.0 3.5 4.9 3.6 Specific Conductance (µmhos/cm) 6 77.0 109.9 104.4 100.0 12.6 Hardness (mg/L) 1 22.0 Alkalinity (mg/L) 8 12.0 22.0 16.0 16.2 2.8 Monthly Stream Flow (cfs) 2 12.3 16.5 14.4 14.4 3.0 Measured Stream Flow (cfs) 2 12.3 16.5 14.4 14.4 3.0 Chemical Dissolv ed Ox y gen (mg/L) 6 7.3 8.2 7.6 7.6 0.3 pH (SU) 6 5.6C 6.1 5.9 5.9 0.1 3 J Ammonia Nitrogen (mg/L) 8 < 0.013 0.180 0.050 0.057 0.055 J Nitrate+Nitrite Nitrogen (mg/L) 8 1.020 1.870 1.545 1.535 0.239 J Total Kjeldahl Nitrogen (mg/L) 8 < 0.050 0.740 0.160 0.250 0.263 J Dis Reactiv e Phosphorus (mg/L) 8 0.151 0.644 0.207 0.309 0.191 J Total Phosphorus (mg/L) 8 0.231 0.750 0.283 0.388 0.192 J CBOD-5 (mg/L) 8 < 2.0 < 2.0 1.0 1.0 0.0 Chlorides (mg/L) 8 8.8 15.0 12.5 12.3 2.4 Total Metals Aluminum (mg/L) 1 0.312 Iron (mg/L) 1 0.480
Manganese (mg/L) 1 0.063 Dissolved Metals J Aluminum (mg/L) 1 0.130 J Antimony (µg/L) 1 0.026 J Arsenic (µg/L) 1 0.519 A 1 Cadmium (µg/L) 1 < 0.087 J Chromium (µg/L) 10.988 J Copper (µg/L) 11.370 Iron (mg/L) 10.287 J Lead (µg/L) 10.283 Manganese (mg/L) 10.059 J Nickel (µg/L) 10.705 Selenium (µg/L) 1 < 0.535 Silv er (µg/L) 1 < 0.538 J Thallium (µg/L) 1 0.019 Zinc (µg/L) 1 7.130 Biological Chlorophy ll a (mg/m³) 8 < 1.00 < 1.00 0.50 0.50 0.00 J E. coli (MPN/DL) 8 34.0 830.0 73.5 161.0 271.3
A=S,F&W aquatic life use criterion exceeded; E=# samples that exceeded criteria; J= estimate; L=estimate; N=# samples; Q=number of samples that have uncertain exceedances.
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Parameter N Min Max Med Avg SD E SDYB-2 Physical Temperature (°C) 5 16.0 28.3 22.5 22.9 5.1 Turbidity (NTU) 8 4.1 24.3 6.7 9.4 6.6 Total Dissolv ed Solids (mg/L) 8 59.0 11700.0 3500.0 4241.2 4256.5 J Total Suspended Solids (mg/L) 8 4.0 16.0 8.0 8.4 4.0 Specific Conductance (µmhos/cm) 5 65.9 27628.0 16629.0 13030.5 12467.6 J Alkalinity (mg/L) 8 8.0 59.0 21.5 27.8 19.6 Monthly Stream Flow (cfs) 8 -203.8 126.6 43.8 18.4 99.9 Measured Stream Flow (cfs) 8 -203.8 126.6 43.8 18.4 99.9 Chemical Dissolv ed Ox y gen (mg/L) 5 0.1C 9.6 6.3 4.8 4.2 2 pH (SU) 5 5.6C 7.3 6.7 6.6 0.7 1 J Ammonia Nitrogen (mg/L) 8 < 0.013 0.060 0.030 0.031 0.023 Nitrate+Nitrite Nitrogen (mg/L) 8 0.197 1.010 0.748 0.654 0.303 J Total Kjeldahl Nitrogen (mg/L) 8 0.340 1.200 0.970 0.888 0.320 J Dis Reactiv e Phosphorus (mg/L) 8 < 0.003 0.196 0.011 0.036 0.066 J Total Phosphorus (mg/L) 8 0.036 0.113 0.078 0.072 0.026 J CBOD-5 (mg/L) 8 < 2.0 5.0 2.4 2.4 1.5 Chlorides (mg/L) 8 11.0 7800.0 1965.0 2612.2 2803.1 Biological Chlorophy ll a (mg/m³) 8 < 1.00 12.00 3.95 4.95 3.81 J,L Enterococci (MPN/DL) 8 10 2100 15 309 730
A=S,F&W aquatic life use criterion exceeded; E=# samples that exceeded criteria; J= estimate; L=estimate; N=# samples; Q=number of samples that have uncertain exceedances.
2014 CWMP: Perdido Sub-Estuary Report 79
Parameter NMinMaxMedAvgSDE WLFB-2 Physical Temperature (°C) 3 18.2 26.9 26.6 23.9 4.9 Turbidity (NTU) 8 4.0 7.7 5.4 5.7 1.0 Total Dissolv ed Solids (mg/L) 8 1910.0 16500.0 13150.0 11475.0 4978.1 J Total Suspended Solids (mg/L) 8 4.0 35.0 11.0 12.5 9.7 Specific Conductance (µmhos/cm) 3 3389.0 33929.1 20786.7 19368.3 15319.4 J Alkalinity (mg/L) 8 1.0 73.0 47.5 41.9 27.4 Chemical
Dissolv ed Ox y gen (mg/L) 3 7.8 9.1 7.9 8.3 0.7 pH (SU) 3 7.7 8.0 7.9 7.9 0.2 J Ammonia Nitrogen (mg/L) 8 < 0.013 0.070 0.014 0.022 0.022 Nitrate+Nitrite Nitrogen (mg/L) 8 < 0.008 0.101 0.004 0.022 0.036 J Total Kjeldahl Nitrogen (mg/L) 8 < 0.051 1.100 0.740 0.678 0.334 J Dis Reactiv e Phosphorus (mg/L) 8 < 0.003 0.008 0.003 0.003 0.002 J Total Phosphorus (mg/L) 8 0.026 0.048 0.040 0.038 0.008 J CBOD-5 (mg/L) 8 < 2.0 2.4 1.0 1.3 0.6 Chlorides (mg/L) 8 1000.0 12000.0 7650.0 7175.0 3562.8 Biological
Chlorophy ll a (mg/m³) 8 < 1.00 4.10 2.20 2.02 1.41 J,L Fecal Coliform (COL/DL) 4 114023669 J,L Enterococci (MPN/DL) 8 10 50 5 11 16
A=S,F&W aquatic life use criterion exceeded; E=# samples that exceeded criteria; J= estimate; L=estimate; N=# samples; Q=number of samples that have uncertain exceedances.
2014 CWMP: Perdido Sub-Estuary Report 80
Parameter N Min Max Med Avg SD E IC-4 Physical
Temperature (°C) 8 18.6 30.5 C 27.3 26.0 4.2 1 Turbidity (NTU) 8 2.2 4.6 2.7 2.8 0.8 Total Dissolv ed Solids (mg/L) 8 5530.0 23500.0 16800.0 16266.2 6053.0 J Total Suspended Solids (mg/L) 8 3.099.011.020.431.9 Specific Conductance (µmhos/cm) 8 9907.5 40297.8 31331.8 29905.6 10830.4 Alkalinity (mg/L) 8 17.0 89.0 72.0 59.5 28.9 Monthly Stream Flow (cfs) 7 -8847.9 10700.2 -3358.4 -46.8 7567.1 Measured Stream Flow (cfs) 7 -8847.9 10700.2 -3358.4 -46.8 7567.1 Chemical
Dissolv ed Ox y gen (mg/L) 8 6.0 8.5 7.4 7.4 0.9 pH (SU) 8 7.1 8.1 8.0 7.8 0.3 J Ammonia Nitrogen (mg/L) 8 < 0.013 0.110 0.008 0.028 0.037 J Nitrate+Nitrite Nitrogen (mg/L) 8 < 0.008 0.057 0.007 0.017 0.020 J Total Kjeldahl Nitrogen (mg/L) 8 < 0.050 1.000 0.505 0.494 0.382 J Dis Reactiv e Phosphorus (mg/L) 8 < 0.003 < 0.006 0.002 0.002 0.001 J Total Phosphorus (mg/L) 8 < 0.005 0.106 0.030 0.041 0.033 J CBOD-5 (mg/L) 8 < 2.0 < 2.0 1.0 1.0 0.0 Chlorides (mg/L) 8 3300.0 16000.0 11500.0 11237.5 4411.0 Biological
Chlorophy ll a (mg/m³) 8 < 1.00 1.90 1.00 1.06 0.61 J,L Fecal Coliform (COL/DL) 4 18344 L Enterococci (COL/DL) 1 10 J,L Enterococci (MPN/DL) 7 10 10 5 6 2
A=S,F&W aquatic life use criterion exceeded; E=# samples that exceeded criteria; J= estimate; L=estimate; N=# samples; Q=number of samples that have uncertain exceedances.
2014 CWMP: Perdido Sub-Estuary Report 81
Parameter NMinMaxMedAvgSDEQ
Physical Temperature (°C) 8 16.2 30.7 C 26.7 25.9 5.3 3 Turbidity (NTU) 8 9.4 23.6 10.8 13.5 5.3 Total Dissolv ed Solids (mg/L) 7 3800.0 17500.0 13900.0 11317.1 5095.1 Total Suspended Solids (mg/L) 7 13.0 29.0 18.0 19.6 5.6 Specific Conductance (µmhos/cm) 8 6177.2 34354.7 19245.5 17073.4 13985.5 Hardness (mg/L) 1 1000.0 Alkalinity (mg/L) 7 37.0 94.0 64.0 63.6 20.9 Monthly Stream Flow (cfs) 8 -2723.4 6898.3 3251.2 2441.0 3542.2 Measured Stream Flow (cfs) 8 -2723.4 6898.3 3251.2 2441.0 3542.2 Chemical
Dissolv ed Ox y gen (mg/L) 8 5.0 8.4 5.7 6.2 1.1 pH (SU) 8 6.5 7.8 7.4 7.3 0.5 J Ammonia Nitrogen (mg/L) 7 < 0.013 0.150 0.040 0.063 0.061 Nitrate+Nitrite Nitrogen (mg/L) 7 < 0.008 0.046 0.028 0.022 0.018 Total Kjeldahl Nitrogen (mg/L) 7 0.170 1.300 0.960 0.883 0.372 J Dis Reactiv e Phosphorus (mg/L) 7 < 0.006 0.045 0.021 0.023 0.019 J Total Phosphorus (mg/L) 7 0.040 0.107 0.091 0.078 0.025 J CBOD-5 (mg/L) 7 < 2.0 3.0 1.0 1.3 0.8 Chlorides (mg/L) 7 2200.0 12000.0 7900.0 7342.8 3911.5 Total Metals
Aluminum (mg/L) 1 0.458 Iron (mg/L) 1 0.201 Manganese (mg/L) 1 0.060 Dissolved Metals
J Aluminum (mg/L) 1 0.104 J Antimony (µg/L) 1 0.396 J Arsenic (µg/L) 1 3.090 A 1 Cadmium (µg/L) 1 < 0.087 J Chromium (µg/L) 1 0.807 Copper (µg/L) 1 34.100 Iron (mg/L) 1 < 0.009 J Lead (µg/L) 1 0.165 J Manganese (mg/L) 1 0.011 J Nickel (µg/L) 1 2.480 Selenium (µg/L) 1 9.900 A 1 Silv er (µg/L) 1 < 0.538 J Thallium (µg/L) 1 0.281 A 1 Zinc (µg/L) 1 < 0.087 Biological
Chlorophy ll a (mg/m³) 7 1.00 3.90 3.20 2.74 1.10 J,L Enterococci (MPN/DL) 8 106601089231
A=S,F&W aquatic life use criterion exceeded; E=# samples that exceeded criteria; J= estimate; L=estimate; N=# samples; Q=number of samples that have uncertain exceedances. .
2014 CWMP: Perdido Sub-Estuary Report 82
Parameter NMinMaxMedAvgSDE ARNB-1 Physical
Temperature (°C) 8 18.3 29.4 27.7 25.7 4.7 Turbidity (NTU) 7 1.9 11.7 3.2 4.2 3.4 Total Dissolv ed Solids (mg/L) 8 2450.0 22700.0 12050.0 12092.5 6794.0 J Total Suspended Solids (mg/L) 8 2.0 21.0 9.5 10.9 6.0 Specific Conductance (µmhos/cm) 8 3966.7 35733.1 21126.2 21062.0 11600.9 J Alkalinity (mg/L) 8 < 1.2 69.0 54.5 39.7 29.0 Chemical
Dissolv ed Ox y gen (mg/L) 8 6.0 9.3 7.7 7.5 1.1 pH (SU) 8 7.4 8.1 7.8 7.8 0.2 J Ammonia Nitrogen (mg/L) 8 < 0.013 0.110 0.014 0.030 0.035 J Nitrate+Nitrite Nitrogen (mg/L) 8 < 0.008 0.108 0.004 0.021 0.037 J Total Kjeldahl Nitrogen (mg/L) 8 < 0.051 0.800 0.630 0.571 0.241 J Dis Reactiv e Phosphorus (mg/L) 8 < 0.003 0.007 0.003 0.003 0.002 J Total Phosphorus (mg/L) 8 0.023 0.062 0.030 0.034 0.013 J CBOD-5 (mg/L) 8 < 2.0 < 2.0 1.0 1.0 0.0 Chlorides (mg/L) 8 1400.0 13000.0 7750.0 7537.5 4245.0 Biological
Chlorophy ll a (mg/m³) 8 < 1.00 3.60 0.50 1.14 1.10 J Fecal Coliform (COL/DL) 4 1 460 1 116 230 L Enterococci (COL/DL) 1 10 J,L Enterococci (MPN/DL) 7 10 40 5 10 13
A=S,F&W aquatic life use criterion exceeded; E=# samples that exceeded criteria; J= estimate; L=estimate; N=# samples; Q=number of samples that have uncertain exceedances.
2014 CWMP: Perdido Sub-Estuary Report 83
Parameter NMinMaxMedAvgSDE
PDBB-0 Physical
Temperature (°C) 8 17.3 29.3 25.6 24.5 4.4 Turbidity (NTU) 8 0.7 2.8 1.2 1.5 0.7 Total Dissolv ed Solids (mg/L) 8 17800.0 30700.0 27050.0 25850.0 4466.7 Total Suspended Solids (mg/L) 8 8.0 69.0 13.0 19.4 20.3 Specific Conductance (µmhos/cm) 8 32983.0 51413.7 47388.5 45044.7 6847.5 Hardness (mg/L) 1 3417.2 Alkalinity (mg/L) 8 49.0 116.0 79.5 85.9 22.1 Chemical
Dissolv ed Ox y gen (mg/L) 8 6.8 8.4 7.1 7.4 0.6 pH (SU) 8 7.8 8.0 8.0 8.0 0.1 J Ammonia Nitrogen (mg/L) 8 < 0.013 0.020 0.007 0.008 0.005 Nitrate+Nitrite Nitrogen (mg/L) 8 < 0.008 0.043 0.004 0.015 0.016 J Total Kjeldahl Nitrogen (mg/L) 8 < 0.050 1.600 0.260 0.515 0.628 J Dis Reactiv e Phosphorus (mg/L) 8 < 0.003 < 0.006 0.003 0.002 0.001 J Total Phosphorus (mg/L) 8 < 0.005 0.069 0.002 0.022 0.029 J CBOD-5 (mg/L) 8 < 2.0 3.5 1.0 1.3 0.9 Chlorides (mg/L) 8 11000.0 20000.0 17500.0 16750.0 3453.8 Total Metals
J Aluminum (mg/L) 1 0.107 J Iron (mg/L) 1 0.029 Manganese (mg/L) 1 < 0.006 Dissolved Metals
J Aluminum (mg/L) 1 0.067 J Antimony (µg/L) 1 0.387 Arsenic (µg/L) 1 5.370 A 1 Cadmium (µg/L) 1 < 0.348 J Chromium (µg/L) 11.620 Copper (µg/L) 1 50.300 Iron (mg/L) 1 < 0.009 J Lead (µg/L) 10.792 Manganese (mg/L) 1 < 0.006 J Nickel (µg/L) 11.460 Selenium (µg/L) 1 28.800 A 1 Silv er (µg/L) 1 < 2.150 Thallium (µg/L) 1 < 0.028 Zinc (µg/L) 1 22.100 Biological
Chlorophy ll a (mg/m³) 8 < 1.00 1.40 0.50 0.69 0.36 J,L Fecal Coliform (COL/DL) 4 1201510 J,L Enterococci (MPN/DL) 8 10 20 5 7 5
A=S,F&W aquatic life use criterion exceeded; E=# samples that exceeded criteria; J= estimate; L=estimate; N=# samples; Q=number of samples that have uncertain exceedances.
2014 CWMP: Perdido Sub-Estuary Report 84
Parameter NMinMaxMedAvgSDE
GMEX-8 Physical Temperature (°C) 8 17.1 30.2 C 25.5 24.5 4.4 1 Turbidity (NTU) 8 0.0 1.4 0.5 0.6 0.4 Total Dissolv ed Solids (mg/L) 8 24200.0 33100.0 28750.0 28712.5 3251.1 Total Suspended Solids (mg/L) 8 10.0 137.0 14.5 28.6 43.8 Specific Conductance (µmhos/cm) 8 37137.3 51939.9 51014.2 49140.7 4930.1 Alkalinity (mg/L) 8 48.0 123.0 104.5 97.1 24.8 Chemical
Dissolv ed Ox y gen (mg/L) 8 6.4 8.3 7.2 7.3 0.7 pH (SU) 8 7.8 8.1 8.0 7.9 0.1 J Ammonia Nitrogen (mg/L) 8 < 0.013 0.020 0.007 0.008 0.005 Nitrate+Nitrite Nitrogen (mg/L) 8 < 0.008 0.021 0.004 0.006 0.006 J Total Kjeldahl Nitrogen (mg/L) 8 < 0.051 1.800 0.310 0.579 0.622 J Dis Reactiv e Phosphorus (mg/L) 8 < 0.003 < 0.006 0.002 0.002 0.001 J Total Phosphorus (mg/L) 8 < 0.004 0.078 0.002 0.019 0.031 J CBOD-5 (mg/L) 8 < 2.0 < 2.0 1.0 1.0 0.0 Chlorides (mg/L) 8 15000.0 21000.0 19500.0 19000.0 1851.6 Biological
Chlorophy ll a (mg/m³) 8 < 1.00 < 1.00 0.50 0.50 0.00 L Fecal Coliform (COL/DL) 4 11110 J,L Enterococci (MPN/DL) 8 10 10 5 6 2
A=S,F&W aquatic life use criterion exceeded; E=# samples that exceeded criteria; J= estimate; L=estimate; N=# samples; Q=number of samples that have uncertain exceedances.
2014 CWMP: Perdido Sub-Estuary Report 85