Updated Source Water Assessment
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Updated Source Water Assessment Ashland Water Department PWS #4100047 March 2018 Prepared for: City of Ashland Ashland Water Department Prepared by: Department of Environmental Quality Agency Headquarters 700 NE Multnomah Street, Suite 600 Kate Brown, Governor Portland, OR 97232 (503) 229-5696 FAX (503) 229-6124 TTY 711 March 22, 2018 Michael Faught, Public Works Director Greg Hunter, Water Plant Supervisor Ashland Water Department 20 East Main Street Ashland, OR 97520 Re: Updated Source Water Assessment for PWS # 4100047 Dear Mr. Faught and Mr. Hunter, On behalf of the Oregon Health Authority (OHA), the Oregon Department of Environmental Quality (DEQ) is pleased to provide your community with important information in this Updated Source Water Assessment. The updated assessment is intended to provide information and resources to assist you and your community to implement local drinking water protection efforts. Since the first source water assessments were completed in 2005, state agencies have significantly expanded analytical capabilities, including more detailed data for analyzing natural characteristics and potential pollutant sources. DEQ is currently completing the updated assessments for surface water systems and OHA is updating the groundwater system assessments. As you know, assuring safe drinking water depends on public water suppliers implementing multiple successful practices. First, protect the drinking water source. Second, practice effective water treatment. Third, conduct regular monitoring for contaminants to assure safety. Fourth, protect the distribution system piping and finished water storage from recontamination. Finally, practice competent water system operation, maintenance, and construction. These practices are collectively called “multiple barrier public health protection”. Source water protection is an important first step because starting with the best possible quality source water helps assure that water treatment can be effective at all times. Source water protection is accomplished by effective state public health programs, environmental protection, land use policies, pro-active land stewardship, and by implementation of local drinking water protection efforts. The susceptibility of the public drinking water system source depends on both the natural conditions in the watershed as well as the anthropogenic activities in the watershed. This letter, with attached figures and technical information, constitutes your Updated Source Water Assessment. It supplements your original Source Water Assessment (link here: http://www.deq.state.or.us/wq/dwp/swrpts.asp ). One of the most important assets a public water system can have is accurate source water area mapping and visual resources to share with the community citizens and officials. The figures include a new regional map view of your watershed, topographic basemap with the source area delineated, and maps with natural characteristics, anthropogenic land uses, potential sources of pollutants, and historic landslides. Information on anthropogenic land uses in a drinking water source area is important for evaluating potential pollutant sources and working with stakeholders upstream. Tables are provided that include a summary of the types of potential pollutant sources present in your drinking water source area. There are also a variety of resources included in this document to assist you with drinking water source protection efforts. Appendix #1 provides a summary of how to use the information provided in the assessment to move forward to develop and implement source water protection. Appendix #3 lists websites and resources available to public water systems and community members seeking technical assistance for work on watershed protection. Appendix #4 provides brief descriptions and contact information for grants and loans to fund both drinking water infrastructure and source protection projects. State agency resources are available to help you with mapping and information needs. Larger sizes of the source area maps and more details of landslide potential and other natural characteristics are available for you upon request (contact Julie Harvey at 503-229-5664). DEQ has developed “Resource Guides” with more extensive information to assist public water systems in protecting their source waters. The Surface Water Resource Guide is available at http://www.oregon.gov/deq/wq/programs/Pages/dwp.aspx. For direct assistance and/or additional information regarding watershed protection, call Sheree Stewart at DEQ (503-229-5413). For more information on drinking water policies and procedures, call Casey Lyon at OHA (541-726-2587). Sincerely, Sheree Stewart, Drinking Water Protection Coordinator Environmental Solutions Division Cc: Casey Lyon, Technical Services Manager, Oregon Health Authority Figure 1. Rogue Basin Public Water Systems (PWSs) Drinking Water Source Areas and Adjacent Source Areas Bandon ¬«99 M y rtle Point PW S # 4100957 542 «¬138 ¬« W inston ¬«230 101 ® ¤£ Dillard W D M y rtle Creek PW S #4100213 ¬«42 §¨¦5 PW S #4101092 542 US FS Tiller R anger S tation Note: W atershed areas for PW S #4100466 ¬« City of Coquille R iddle intakes upstream of each L anglois W ater Cany onville Powers PW S 's intake are included in District its drinking water source PW S # ¬«62 area. Activities and impacts PW S #4100706 4192139 in the source area for PW S #4100672 City of R iddle Tiller Elem. PW S #4100323 upstream water users also City of Powers S D#15 have the potential to impact PW S #4100670 City of Glendale City of Port Orford downstream water users. Glendale W ater sy stems in the same ¬«227 PW S #4100808 subbasin are encouraged to Country V iew M H Estates work together as they move forward with developing protection£¤9 s7trategies. 5 PW S #4100342 PW S # §¨¦ S hady Cove PW S #4101483 City of Grants 4101059 Angler's Cove/S CHW C 422 ¤£101 Pass ¬« City of Chiloquin Gold Beach Butte Falls ¬«260 ¬«62 ¬«234 PW S #4100513 (GW ) ¬«62 Eagle Point M edford W ater Commission Grants Pass Gold Hill 62 ¬«99 ¬« PW S #4100513 Big Butte S prings Gold Beach PW S # M edford W ater PW S #41007124100333 PW S #4194170 Commission ¤£199 City of R ogue City of Fish L ake R esort R iver Gold Hill M edford 101 ¤£ J acksonville 5 §¨¦ PW S #4193973 Phoenix 238 L atgawa M ethodist ¬« Talent ¤£97 ¬«255 Church Camp 97B Ashland ¤£ PW S #4101361 Cave J unction ¬«46 Klamath Falls ¬«140 ¤£101 R ainbow R ock Condominiums «¬140 PW S #4100971 PW S #4100047 BrookingsPW S #4101062 City of Cave Ashland W ater ¬«66 R ainbow R ock V illage M HP ¤£199 PW S #4192674 ¤£97 J unction Department ¬«39 US FS S tar R anger S tation (S W Inactive) «¬273 M errill 1:900,000 M iles 0 2.5 5 10 15 20 Legend po S urface W ater DW S As Interstate Urban Growth Boundary This data analy sis was conducted for strategic planning purposes in drinking water protection. If other uses are R ogue Basin Intakes City limits (ODOT, 2015) (2010) considered for the data, please contact DEQ ’s Drinking W ater Protection Program for details on how this query R ogue R iver Basin U.S . R outes was performed. It is important to understand the limitations and qualifications of queries to ensure appropriate Groundwater Drinking W ater R ivers (1:250,000) Oregon R outes County Boundary interpretation of this data. No warranty expressed or implied is made regarding the accuracy or utility . This S ource Area disclaimer applies both to individual use of the data and aggregate use with other data. R ogue Basin Drinking W ater S ource Areas (surface Oregon Dept of Environmental Q uality /Environmental S olutions Division/W ater Q uality Program Drinking water) W ater Protection Program/GIS . Projection: Oregon L ambert (L ambert Conformal Conic) Note on Base L ay er: The hillshade color effect shown here is the result of additional processing of digital elevation models (DEM - 30 meter GCS _North_American_1983, Datum: D_North_American_1983 File:\\deqhq1\dwp\S W A R eports & grid) data from 1:24000 topographic maps. A "hillshade” was produced first and then color adjusted. The original DEM files were developed by Plan\Update S W A S W 2016\PW S R eports\4100712_R ogueR iver\US W A_Fig1_R ogueBasinPW S V icinity .mxd the OR Dept. of Forestry . Additional processing of the hillshade data with R ed, Green, Blue (R GB) color scheme resulted in the "orshade.sid" Prepared by : jds15M AY 2017 !. !. !. !. !. !. !. !. !. !. !.!. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !.!. !. !. !. !. !. !. !. !. !. !.!. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. !. Figure 2. Ashland Water Department (PWS 00047) Drinking Water Source Areas with Erosion Potential for Management Activities with Soil Surface Disturbance (See Appendix 2 for Key to map details and metadata) Legend po Ashla n d Wa ter Dept. In ta ke !. S urfa ce Wa ter In ta ke Ashla n d Wa ter Dept. Drin kin g Wa ter S ource Area Nea rb y drin kin g wa ter source a rea s for other com m un ities S trea m s n ea r soils !. with sign ifica n t erosion po!. poten tia l. Erosion con trol m ea sures (BMPs) m a y b e n ecessa ry for la n d m a n a gem en t a ctivites tha t disturb or lea ve b a re soils in these a rea s. S trea m s & La kes (NHD) with sign ifica n t erosion poten tia l from in ten sive (>75%) soil surfa ce disturb a n ce (i.e.tilled or b a re soils) (NRCS -RUS LE2/O... see Appen dix 2 Note 4a ). !. S trea m s & La kes !. (NHD) with sign ifica n t !. erosion poten tia l from sub sta n tia l (50-75%) soil surfa ce disturb a n ce (NRCS off-roa d/off-tra il ra tin gs; see Appen dix 2, Note 4b ). S trea m s (NHD) with sign ifica n t erosion poten tia l (slope>30% usin g US FS S RI da ta , NRCS S S URGO da ta n ot a va lia b le; see Appen dix 2 Note 4c).