Willimantic River Water Trail Paddle Guide a National Recreation Trail in C Onnecticut
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Install and Maintain Stream Gauges
Proposition 68 Projects 2019 Update California Department of Water Resources Sustainable Groundwater Management Program INSTALL AND MAINTAIN STREAM GAUGES This project focuses on inventorying, installation, and maintenance of stream gauges in high- and medium-priority basins. Building on the knowledge and successful track record of DWR’s Regional and Statewide Integrated Water Management technical assistance programs, this project supports and is aligned with the Governor’s Water Resilience Portfolio (Executive Order N-10-19), the Open and Transparent Data Act (AB 1755), and Sen. Bill Dodd’s Stream Gauges Bill (SB19). What is Proposition 68? will provide fast and reliable data. Additionally, this project supports GSP development, implementation, The California Drought, Water, Parks, Climate, Coastal and evaluation, as wells as groundwater recharge Protection and Outdoor for all Fund (Senate Bill 5, projects. This new surface water data provides Proposition 68) authorized $4 billion in general multiple benefits to programs within a variety of local, obligation bonds for state and local parks, state, and federal agencies including State Water environmental protection and restoration projects, Resources Control Board and the Department of Fish water infrastructure projects, and flood protection and Wildlife. projects. The Install and Maintain Stream Gauge project utilizes $4.95 million on data, tools, and What is New in 2019? analysis efforts for drought and groundwater Five stream gauges were recently installed throughout investments to achieve regional sustainability in the state at Bear River, Ash Creek, Owens Creek, support of the Sustainable Groundwater Management Tuolumne River, and San Luis Ray River. Act (SGMA) over a period of five years. How Does This Project Support SGMA? What are the Next Steps? In the next two years, DWR plans to install SGMA requires Groundwater Sustainability Agencies approximately 24 additional stream gauges in high- (GSAs) to monitor and assess stream depletion, water and medium-priority basins. -
U.S. Geological Survey Streamflow Data in Michigan Using the USGS NWIS Database MDOT Bridge Scour Conference October 5, 2017
U.S. Geological Survey Streamflow data in Michigan Using the USGS NWIS database MDOT Bridge Scour Conference October 5, 2017 Tom Weaver Eastern Hydrologic Data Chief Upper Midwest Water Science Center In Michigan, USGS operates gage sites to monitor hydrologic conditions including streamflow, surface water and groundwater levels, and water quality. In October 2017, the network includes: 166 real time continuous-record streamgages 10 crest-stage gages (CSG), including 5 real time 10 continuous-record lake-level gages 11 miscellaneous streamflow sites 32 continuous-record water-quality sites 24 groundwater wells, including 6 USGS real time Climate Response Network sites How do we monitor surface water? Surface-water monitoring at a stream site Gage height (stage) and streamflow are measured at gaging stations through a range of conditions At most sites a stage-discharge relation is constructed Outside staff gage indicating water level In 2017, most gaging stations are being constructed with non- submersible pressure transducers and GOES satellite transmitters. This is station number 04032000 Presque Isle River near Tula: https://waterdata.usgs.gov/mi/nwis/uv/ ?site_no=04032000&PARAmeter_cd= 00065,00060 Accessing the National Water Information System (NWIS) is easy https://mi.water.usgs.gov/ It’s easy to expand the interactive map by clicking on it twice. At that point you can easily hover the cursor over the gage of interest. Optionally, you can actually just go over to the Statewide Streamflow Current Conditions Table, or the other tables and click them instead. We will visit that option after a few slides. Clicking on the Daily Streamflow Conditions Map again brings you an interactive view: Each colored dot on the map indicates the location of, and streamflow conditions at, a streamgage. -
Streamflow Forecasting Without Models
1 Streamflow Forecasting without Models 2 Witold F. Krajewski, Ganesh R. Ghimire, and Felipe Quintero 3 Iowa Flood Center and IIHR-Hydroscience & Engineering, The University of Iowa, Iowa City, 4 Iowa 52242. 5 *Corresponding author: Witold F. Krajewski, [email protected] 6 7 This work has been submitted to the Weather and Forecasting. Copyright in this work may be 8 transferred without further notice. Preprint submitted to Weather and Forecasting 9 Abstract 10 The authors explore simple concepts of persistence in streamflow forecasting based on the 11 real-time streamflow observations from the years 2002 to 2018 at 140 U.S. Geological Survey 12 (USGS) streamflow gauges in Iowa. The spatial scale of the basins ranges from about 7 km2 to 13 37,000 km2. Motivated by the need for evaluating the skill of real-time streamflow forecasting 14 systems, the authors perform quantitative skill assessment of different persistence schemes 15 across spatial scales and lead-times. They show that skill in temporal persistence forecasting has 16 a strong dependence on basin size, and a weaker, but non-negligible, dependence on geometric 17 properties of the river networks in the basins. Building on results from this temporal persistence, 18 they extend the streamflow persistence forecasting to space through flow-connected river 19 networks. The approach simply assumes that streamflow at a station in space will persist to 20 another station which is flow-connected; these are referred to as pure spatial persistence 21 forecasts (PSPF). The authors show that skill of PSPF of streamflow is strongly dependent on 22 the monitored vs. -
Who Uses Stream Gauge Data?
Who Uses Stream Gauge Data? By Janet Thigpen, CFM Flood Mitigation Specialist Southern Tier Central Regional Planning & Development Board Presentation at “Stream Gauges ~ Follow the Flow” Congressional Briefings on May 2, 2014 (hosted by the US Geological Survey) USGS Streamgauge Network in New York State The current US Geological Survey (USGS) stream gauge sites in New York State are shown in yellow. This network changes over time as new gauges are added and others are discontinued. Many of the gauges that have been discontinued because of funding difficulties are sites that are important because they have a long period of record. The red sites on this map represent gauges that have 30 or more years of record, but are no longer active. When these gauges were discontinued, the value of that long-term record was lost forever. Prepared by Southern Tier Central Regional Planning and Development Board Page 1 I am going to share some examples of how people in my region use stream gauge information, but first let’s look at some data. This shows 45 years of annual high flows for the Vltava River in Prague, Czechoslovakia (courtesy of Bo Juza, DHI). We would generally consider this to be a pretty good period of record for understanding and analyzing the high flows. If we have 85 years of data, that’s even better. We see that there were some floods during that time. 135 years is more data than we have for any site in the United States. The longest period of record for any gauge in New York State is 111 years. -
Bolton Coventry Mansfield Tolland
Bolton ● Coventry ● Mansfield ● Tolland Photo courtesy of city-data.com Photo courtesy of Deroches Photography Photo courtesy of explorect.org A Homegrown Approach to Strengthening the Region Action Plan for Economic Vitality Prepared for the Towns of Bolton, Coventry, Mansfield, and Tolland Prepared by AdvanceCT September 2020 Table of Contents Executive Summary ............................................................................................................................................................................. 3 Background .............................................................................................................................................................................................. 4 Project Overview .................................................................................................................................................................................. 5 Methodology .......................................................................................................................................................................................... 6 What We Learned ................................................................................................................................................................................ 8 Impact of COVID-19 ......................................................................................................................................................................... 10 Recommendations .............................................................................................................................................................................11 -
An Evaluation of the Fishery Resources of the Thames River Watershed, Connecticut Connecticut Department of Environmental Protection
University of Connecticut OpenCommons@UConn College of Agriculture, Health and Natural Storrs Agricultural Experiment Station Resources 5-1975 An Evaluation of the Fishery Resources of the Thames River Watershed, Connecticut Connecticut Department of Environmental Protection Follow this and additional works at: https://opencommons.uconn.edu/saes Part of the Aquaculture and Fisheries Commons, Biodiversity Commons, Environmental Health and Protection Commons, Environmental Indicators and Impact Assessment Commons, Environmental Monitoring Commons, Natural Resources and Conservation Commons, Natural Resources Management and Policy Commons, and the Water Resource Management Commons Recommended Citation Connecticut Department of Environmental Protection, "An Evaluation of the Fishery Resources of the Thames River Watershed, Connecticut" (1975). Storrs Agricultural Experiment Station. 50. https://opencommons.uconn.edu/saes/50 Bulletin 435, May '975 3 7 An Evaluation of the Fishery Resources of the Thames River Watershed, Connecticut Edited by Richard L. Hames Connecticut Department of Environmental Protection STORRS AGRICULTURA L EXPERIMENT STATION COLLEGE OF AGRICULTURE AND NATURAL RE SOURCES THE UNIVERSITY OF CONNECTICUT, ST ORRS. CONNECTICUT 06268 • EDITOR'S FOREWORD The Thames River system is located in a section of southern New England that has escaped the extreme alterations of the industrial revolution and later urbanization. It has, unfortunately, suffered the consequences of dam construction causing the disappearance of anadromous fish, and industrial and domestic pollution which degraded water quality in some areas to a marginal fisheries habitat. Enough unspoiled areas are left, unaltered by dams, pollution and the developer, to reward the knowledgeable observer with a glimpse of what it was and what it could be again. As part of the program for restoration of anadromous fish to the Thames River system, it was decided to make a general biological survey of the system to document present conditions . -
Streamflow Measurement and Analysis
BLBS113-c06 BLBS113-Brooks Trim: 244mm×172mm August 25, 2012 17:2 CHAPTER 6 Streamflow Measurement and Analysis INTRODUCTION Streamflow is the primary mechanism by which water moves from upland watersheds to ocean basins. Streamflow is the principal source of water for municipal water supplies, ir- rigated agricultural production, industrial operations, and recreation. Sediments, nutrients, heavy metals, and other pollutants are also transported downstream in streamflow. Flooding occurs when streamflow discharge exceeds the capacity of the channel. Therefore, stream- flow measurements or methods for predicting streamflow characteristics are needed for various purposes. This chapter discusses the measurement of streamflow, methods and mod- els used for estimating streamflow characteristics, and methods of streamflow-frequency analysis. MEASUREMENT OF STREAMFLOW Streamflow discharge, the quantity of flow per unit of time, is perhaps the most important hydrologic information needed by a hydrologist and watershed manager. Peak-flow data are needed in planning for flood control and designing engineering structures including bridges and road culverts. Streamflow data during low-flow periods are required to estimate the dependability of water supplies and for assessing water quality conditions for aquatic organisms (see Chapter 11). Total streamflow and its variation must be known for design purposes such as downstream reservoir storage. The stage or height of water in a stream channel can be measured with a staff gauge or water-level recorder at some location on a stream reach. The problem then becomes converting a measurement of the stage of a stream to discharge of the stream. This problem Hydrology and the Management of Watersheds, Fourth Edition. Kenneth N. -
Stormwater Management Detention Pond Design Within Floodplain Areas
Transportation Research Record 1017 31 Stormwater Management Detention Pond Design Within Floodplain Areas PAUL H. SMITH and JACK S. COOK ABSTRACT A unique approach to stormwater management for projects requ1r1ng mitigation of additional runoff caused by increases in paved surface areas is presented in this paper. Based on a design project developed for the General Foods Corporate Headquarters site in Rye, New York, a stormwater detention pond has been imple mented within the floodplain of an adjacent water course. Encroachment of con struction activities within a floodplain required the development of a deten tion pond that was capable of controlling excess runoff from adjacent areas while providing continued floodplain storage volume capacity. This methodology minimized the impacts of flooding on adjacent properties and provided suitable land areas for development in accordance with the intended use of the property. Occurrence of peak flooding along the watercourse did not coincide with peak stormwater runoff conditions from the smaller adjacent drainage area. By uti lizing flood hydrograph principles and analyses that were developed by the Soil Conservation Service, U.S. Department of Agriculture, it was possible to de velop a detention pond to provide a stormwater management phase and a flood control phase. Computerized analyses were compared for pre- and postdevelopment conditions using stormwater runoff and flood flow data on the basis of storms with return period frequencies of 10, 25, 50, and 100 years. By providing inlet pipes and outlet structures to control detention pond storage, peak flows from the pond to the watercourse and peak flood flows on the watercourse were re duced. -
Destimating Design Stream Flows at Road- Stream Crossings
Estimating Design Stream Flows at Road- Stream Crossings DD.1 Introduction D.2 Design Flow Estimates D.3 Verifying Flow Estimates at Ungauged Streams Stream Simulation Appendix D—Estimating Design Stream Flows at Road-Stream Crossings D.1 INTRODUCTION Assessing the stability of any crossing structure requires estimating design peak flows for the site. This appendix provides guidance and resources for estimating peak flows at gauged and ungauged sites. It is intended as a desk reference rather than an introduction to hydrologic analysis. Two types of design flows apply to stream-simulation design: l structural-design flows, for evaluating the structural integrity and stability of the culvert, bridge, etc., during flood events. l bed-design flows, for evaluating the stability of the particles intended to be permanent inside a drainage structure. Design flows are the flows that, if exceeded, may cause failure of the structure or the bed. The two design flows may be different if the consequences of bed failure are different from those of complete structural failure (see risk discussion in section 6.5.2.1). For example, if the acceptable risk of bed failure is 4 percent in any one year, the bed design flow would be the flow that is exceeded on average only every 25 years—the 25-year flow. The acceptable riskof losing the structure might be lower, perhaps only 1-percent per year, in which case the 100-year flow would be the structural-design flow. These design flows are often taken to be the same in real applications, but it is important to understand the concept that design flows are determined based on acceptable risks and consequences. -
Manual on Procedures in Operational Hydrology
MINISTRY OF WATER ENERGY AND MINERALS TANZANIA MANUAL ON PROCEDURES IN OPERATIONAL HYDROLOGY VOLUME 1 ESTABLISHMENT OF STREAM GAUGING STATIONS 1979 79 H* (o/8 MINISTRY OF WATER NORWEGIAN AGENCY FOR ENERGY AND MINERALS INTERNATIONAL DEVELOPMENT TANZANIA (NORAD) MANUAL ON PROCEDURES IN OPERATIONAL HYDROLOGY VOLUME 1 ESTABLISHMENT OF STREAM GAUGING STATIONS 0STEN A. TILREM 1979 © Norwegian Agency for International Development (NORAD) 1979 Printed by Fotosats Vs - Oslo Oslo 1979 PREFACE This Manual on Procedures in Operational Hydrology has been prepared jointly by the Ministry of Water, Energy and Minerals of Tanzania and the Norwegian Agency for International Development (NORAD). The author is 0sten A. Tilrem, senior hydrologist at the Norwegian Water Resources and Electricity Board, who for a period served as the Project Manager of the project Hydrometeorological Survey of Western Tanzania. The Manual consists of five Volumes dealing with 1. Establishment of Stream Gauging Stations 2. Operation of Stream Gauging Stations 3. Stream Discharge Measurements by Current Meter and Relative Salt Dilution 4. Stage-Discharge Relations at Stream Gauging Stations 5. Sediment Transport in Streams - Sampling, Analysis and Computation The author has drawn on many sources for information contained in this Volume and is indebted to these. It is hoped that suitable acknowledgement is made in the form of references to these works. The author would like to thank his colleagues at the Water Resources and Electricity Board for kindly reading and criticising the manuscript. Special credit is due to W. Balaile, Principal Hydrologist at the Ministry of Water, Energy and Minerals of Tanzania for his review and suggestions. -
New Wellfield Along the Willimantic River
10.0 EVALUATION OF NEW WELLFIELD(S) ALONG THE WILLIMANTIC RIVER 10.1 ASSESSMENT OF FEASIBILITY Unlike an interconnection with an established supply source, the development of a new groundwater source cannot be evaluated with respect to existing available water. Instead, the ability to develop a particular yield from a new groundwater source is dependent upon available historical information from borings, monitoring wells, and site-specific studies. This data has been complied for each of four potential wellfields along the Willimantic River, two near Mansfield Depot (MD-1 and MD-3) and two near Eagleville Preserve (EP-4 and EP-5). Included in this assessment is recent work undertaken by the Town of Mansfield to analyze a number of potential groundwater sources along the Willimantic River. As summary of locations follows: Alternative #6A is potential wellfield MD-1, located on private property south of Route 44. Most of this property is currently used for agriculture. Alternative #6B is potential wellfield MD-3 located in River Park. The site is owned by the Town of Mansfield and is currently used for recreation. Alternative #6C is potential wellfield EP-4, located in the State-owned northern portion of Eagleville Preserve. This area is currently forested wetland. Alternative #6D is potential wellfield EP-5, located in the southern portion of Eagleville Preserve owned by the Town of Mansfield. 10.1.1 POTENTIAL WELLFIELDS NEAR MANSFIELD DEPOT (MD-1 & MD-3) A number of historic and more recent publications have analyzed potential groundwater aquifers in the Mansfield Depot area. These are briefly summarized below. -
Connecticut Watersheds
Percent Impervious Surface Summaries for Watersheds CONNECTICUT WATERSHEDS Name Number Acres 1985 %IS 1990 %IS 1995 %IS 2002 %IS ABBEY BROOK 4204 4,927.62 2.32 2.64 2.76 3.02 ALLYN BROOK 4605 3,506.46 2.99 3.30 3.50 3.96 ANDRUS BROOK 6003 1,373.02 1.03 1.04 1.05 1.09 ANGUILLA BROOK 2101 7,891.33 3.13 3.50 3.78 4.29 ASH CREEK 7106 9,813.00 34.15 35.49 36.34 37.47 ASHAWAY RIVER 1003 3,283.88 3.89 4.17 4.41 4.96 ASPETUCK RIVER 7202 14,754.18 2.97 3.17 3.31 3.61 BALL POND BROOK 6402 4,850.50 3.98 4.67 4.87 5.10 BANTAM RIVER 6705 25,732.28 2.22 2.40 2.46 2.55 BARTLETT BROOK 3902 5,956.12 1.31 1.41 1.45 1.49 BASS BROOK 4401 6,659.35 19.10 20.97 21.72 22.77 BEACON HILL BROOK 6918 6,537.60 4.24 5.18 5.46 6.14 BEAVER BROOK 3802 5,008.24 1.13 1.22 1.24 1.27 BEAVER BROOK 3804 7,252.67 2.18 2.38 2.52 2.67 BEAVER BROOK 4803 5,343.77 0.88 0.93 0.94 0.95 BEAVER POND BROOK 6913 3,572.59 16.11 19.23 20.76 21.79 BELCHER BROOK 4601 5,305.22 6.74 8.05 8.39 9.36 BIGELOW BROOK 3203 18,734.99 1.40 1.46 1.51 1.54 BILLINGS BROOK 3605 3,790.12 1.33 1.48 1.51 1.56 BLACK HALL RIVER 4021 3,532.28 3.47 3.82 4.04 4.26 BLACKBERRY RIVER 6100 17,341.03 2.51 2.73 2.83 3.00 BLACKLEDGE RIVER 4707 16,680.11 2.82 3.02 3.16 3.34 BLACKWELL BROOK 3711 18,011.26 1.53 1.65 1.70 1.77 BLADENS RIVER 6919 6,874.43 4.70 5.57 5.79 6.32 BOG HOLLOW BROOK 6014 4,189.36 0.46 0.49 0.50 0.51 BOGGS POND BROOK 6602 4,184.91 7.22 7.78 8.41 8.89 BOOTH HILL BROOK 7104 3,257.81 8.54 9.36 10.02 10.55 BRANCH BROOK 6910 14,494.87 2.05 2.34 2.39 2.48 BRANFORD RIVER 5111 15,586.31 8.03 8.94 9.33 9.74