Hydrology and Hydraulics Resource Library
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NATURAL RESOURCES CONSERVATION SERVICE
Hydrology and Hydraulics Training Material
Hydrology and Hydraulic Technical Resources
Engineering handbook and more.
U.S. ENVIRONMENTAL PROTECTION AGENCY
Hydrologic and Water Quality System (HAWQS)
HAWQS is a water quantity and quality modeling system that evaluates the impacts of management alternatives, pollution control scenarios and climate change scenarios
National Hydrography Dataset Plus (Version 2)
NHDPlus is a geo-spatial, hydrologic framework dataset built by the US EPA Office of Water, assisted by the US Geological Survey. Since its first release in 2006, NHDPlus has been made available to the wider water resources community and has been used for many diverse applications by Federal, state, and local governments, as well as non-profit organizations, private companies and educational institutions. The NHDPlus user community has developed tools and ancillary data to support their NHDPlus applications.
Storm Water Management Model (SWMM) with Climate Assessment Tool (CAT) Add In
SWMM is a dynamic hydrology-hydraulic water quality simulation model used for single event or long-term simulation of runoff quantity and quality from primarily urban areas. Users can include any combination of low impact development (LID)/green infrastructure controls to determine their effectiveness in managing stormwater. SWMM includes a climate adjustment tool (SWMM-CAT), which is a simple to use software that applies monthly climate adjustment factors onto precipitation and temperature data.
Surface Water Models
The EPA Center for Exposure Assessment Modeling (CEAM) distributes simulation models and database software designed to quantify movement and concentration of contaminants in lakes, streams, estuaries, and marine environments. This site provides access to watershed modeling tools such as Better Assessment Science Indicating Point and Nonpoint Sources (BASINS), Storm Water Management Model (SWMM) and Water Quality Analysis Simulation Program (WASP).
U.S. FOREST SERVICE
Aquarius is a computer model devoted to the temporal and spatial allocation of water among competing uses in a river basin.
logPearson Frequency Analysis Spreadsheet for Analyses of Streamgage Records
Engineering projects along stream corridors require flow frequency estimates for their designs. Where sufficient streamgage data are available, the likely best method for developing flow frequency relationships are from statistical analyses of streamgage data. The standard procedure for developing these estimates use the logPearson frequency analysis. This spreadsheet tool was developed to implement this analysis procedure.
Portable Electronic Presentations
A wealth of electronic interactive presentations on key scientific talks covering subjects such as fish passage culvert replacement, aquatic organism passage, watershed management, hydrology and geomorphology, riparian management, and more.
StreamNotes is an aquatic and riparian systems publication that has the objective of facilitating knowledge transfer from research and development to on-the-ground application, through technical articles, case studies, and news items. Stream related topics include hydrology, fluvial geomorphology, aquatic biology, riparian plant ecology, and climate change.
Stream Systems Technology Center Media
Videos, CDs, and DVDs for identifying bankfull stage and bedload movement in various regions of the U.S.
Wildcat5 for Windows, A Rainfall-Runoff Hydrograph Model
Wildcat5 is an Excel based tool designed to assist watershed specialists in analyzing rainfall runoff events to predict peak flow and runoff volumes generated by single-event rainstorms for a variety of watershed soil and vegetation conditions. The model is intended for small catchments responsive to conditions of upland soils and cover.
U.S. GEOLOGICAL SURVEY
Annual Water Data Reports
These reports were published annually for many decades for use by engineers, scientists, managers, educators, and the general public. These static archival products supplemented direct access to current and historical water data provided by the National Water Information System web interface (NWISWeb), the authoritative source for USGS water data.
Data Grapher and Data Tabler - Tennessee
From these web pages, you can create graphs and tables of streamflow and water-quality data from selected U.S. Geological Survey sites in the State of Tennessee.
DroughtWatch - Tennessee
This map (from USGS's National Drought Watch Web site) shows the 7-day average streamflow conditions in hydrologic units. Thus, the map shows conditions adjusted for this time of the year. The colors represent 7-day average streamflow percentiles for the day of the year. USGS sites having at least 30 years of record are used. The data used to produce this map are provisional and have not been reviewed or edited. They may be subject to significant change.
Duration Hydrograph Builder
USGS tool for creating a duration hydrograph by site number.
Historical gauge data for streamflow, groundwater, and water quality, as well as annual reports.
Historical gauge data for streamflow, groundwater, and water quality, as well as annual reports.
Historic Streamflow Conditions
Maps and animations of monthly and annual streamflow conditions by water year from 1921-2002.
Hydro-Climatic Data Network
The USGS Hydro-Climatic Data Network is a subset of all USGS streamgages for which the streamflow primarily reflects prevailing meteorological conditions for specified years. These stations were screened to exclude sites where human activities, such as artificial diversions, storage, and other activities in the drainage basin or the stream channel, affect the natural flow of the watercourse. In addition, sites were included in the network because their record length was sufficiently long for analysis of patterns in streamflow over time. The purpose of the network is to provide a streamflow dataset suitable for analyzing hydrologic variations and trends in a climatic context.
A primer on hydrology and the work of hydrologists.
Hydrography Seminar Series
The U.S. Geological Survey National Geospatial Program has initiated a series of virtual seminars to highlight the uses of hydrographic data. These seminars are intended to share success stories from users who have solved real world problems using hydrographic data, provide information about the National Hydrography Dataset and related products, and provide a virtual forum for users, similar to what might be encountered in a conference setting.
Instantaneous Data Archive
Since 1889 the United States Geological Survey has collected continuous stage, discharge, and other instantaneous time-series data on the nations rivers and streams. These time-series data have been and are typically recorded at intervals ranging from 5 to 60 minutes. This web site has been established to make available as much historical instantaneous data from USGS data collection stations as possible. Although this site currently serves instantaneous discharge (streamflow) data only, work is planned to extend it to other time-series parameters in the future.
Modeling of Surface Water Quality
SPARROW is a modeling tool for the regional interpretation of water-quality monitoring data. The model relates in-stream water-quality measurements to spatially referenced characteristics of watersheds, including contaminant sources and factors influencing terrestrial and aquatic transport. SPARROW empirically estimates the origin and fate of contaminants in river networks and quantifies uncertainties in model predictions.
National Hydrography Dataset and Watershed Boundary Dataset
The National Hydrography Dataset (NHD) and Watershed Boundary Dataset (WBD) are used to portray surface water on The National Map. The NHD represents the drainage network with features such as rivers, streams, canals, lakes, ponds, coastline, dams, and streamgages. The WBD represents drainage basins as enclosed areas in eight different size categories. Both datasets represent the real world at a nominal scale of 1:24,000-scale, which means that one inch of The National Map data equals 2,000 feet on the ground. To maintain mapping clarity not all water features are represented and those that are use a moderate level of detail.
As one of the cornerstones of the U.S. Geological Survey's National Geospatial Program, The National Map is a collaborative effort among the USGS and other Federal, State, and local partners to improve and deliver topographic information for the Nation. It has many uses ranging from recreation to scientific analysis to emergency response. The National Map is easily accessible for display on the Web, as products and services, and as downloadable data. The geographic information available from The National Map includes orthoimagery (aerial photographs), elevation, geographic names, hydrography, boundaries, transportation, structures, and land cover.
National Streamflow Statistics
This is a downloadable computer program that allows users to obtain estimates of streamflow statistics for locations where USGS streamgages are not operated. It requires user input of drainage area and other watershed characteristics. StreamStats provides tools to estimate required inputs for the National Streamflow Statistics computer program.
National Water Information System (NWIS)
The NWIS is the Nation's principal repository of water resources data. It includes data from more than 1.5 million sites, some in operation for more than 100 years. Data is available on streamflow, droughts, groundwater, and surface water quality and is searchable by state.
National Water Census - Data Portal
At the National Water Census Data Portal you will find national estimates of water budget components for local watersheds, water withdrawal data for counties, tools to calculate statistics of daily streamflow records, modeled daily streamflow at ungaged stations, and access to records of aquatic biology observations.
Stage-discharge relations (ratings) are usually developed from a graphical analysis of numerous discharge measurements. Measurements are made on various schedules and sometimes for different purposes. All discharge measurements are compiled and maintained in a data base.Ratings are available to agencies and other interested parties from the depot via http at the following URL:http://waterdata.usgs.gov/nwisweb/get_ratings?site_no=XXXXXXXX&file_type=exsa where XXXXXXXX is the 8-15 digit USGS station number.
Realtime Stream Flow
WaterWatch is a USGS website that displays maps, graphs, and tables describing real-time, recent, and past streamflow conditions for the United States. The real-time information generally is updated on an hourly basis.
Stream statistics are computed from daily streamflow values, flood peak flows, and measured low flows, and include, for example, 100-year flood; 7-day, 10-year low flow; and mean annual flow. Statistics such as these are commonly used to help estimate reliability of water supplies and risks of floods or droughts, and may be available in published reports or from the StreamStats site. StreamStats is available in Tennessee and Kentucky.
This web tool allows users click a stream and map upstream and downstream traces and generate reports for each trace (including a map of the trace; its direction, total length, and outlet waterbody; its origin’s stream name, coordinates, and elevation; and counts of the number of gages, streams, states, counties, and cities along the trace.)
Stream Flow Gage Locations Map - Kentucky
PDF map with stream flow gage locations in Kentucky.
Sustainability of Ground-Water Resources
This publication illustrates the hydrologic, geologic, and ecological concepts that must be considered to assure the wise and sustainable use of our precious ground-water resources.
Water Availability Tool for Environmental Resources (WATER) - Kentucky
WATER was developed to provide a method of estimating streamflow, water availability, and other hydrologic information in un-gaged Kentucky basins. WATER incorporates and processes geospatial data to quantitatively describe topography, soil-water storage, climate, streamflow, and other parameters. WATER is also designed so that it can be expanded for other science and regulatory applications including, but not limited to, sediment and nutrient loads, evaluation of surface mining effects (Cumulative Hydrologic Impact Assessments), as well as flows that are necessary for ecological viability.
Water Science Center - Kentucky
This site is home to a variety of Kentucky specific water-resource information. It includes information regarding surface water, ground water, water quality, and many other topics.
Water Science Center - Tennessee
This site is home to a variety of Tennessee specific water-resource information. It includes information regarding surface water, ground water, water quality, and many other topics. The USGS operates the most extensive satellite network of stream-gaging stations in Tennessee, many of which support flood-warning systems.
This USGS tool sends e-mail or text (SMS) messages when certain parameters, as measured by a USGS real-time data-collection station, exceed user-definable thresholds.
A tool for sending an email or text message containing a USGS gaging site number and quickly receiving a reply with its most recent observation.
Watershed Boundaries From GAGES-II: Geospatial Attributes of Gages for Evaluating Streamflow
This dataset, termed "GAGES II", an acronym for Geospatial Attributes of Gages for Evaluating Streamflow, version II, provides geospatial data and classifications for 9,322 stream gages maintained by the U.S. Geological Survey (USGS). This dataset has two purposes: (1) to provide users with a comprehensive set of geospatial characteristics for a large number of gaged watersheds, particularly for gages with long flow record, and (2) to provide a determination of which of those watersheds represent hydrologic conditions which are least disturbed by human influences ("reference gages"), compared to other watersheds within ecoregions.
This USGS tool provides basic flow statistics computed from daily streamflow values, including the daily average, minimum, and maximum streamflow; and flow duration curve for the period of observed data, allowing users to determine longterm flow statistics.
U.S. NATIONAL PARK SERVICE
Hydrographic and Impairment Statistics Database (HIS)
The HIS database provides summary statistics of surface hydrography (acres of lakes, miles of streams, etc.) within and adjacent to each national park unit using the U.S. Geological Survey's (USGS) high resolution National Hydrography Dataset (NHD), the NPS Administrative Park Boundary Dataset, and other sources.
Water Quality Partnership - Big South Fork
This element of the National Water Quality Program empowers U.S. Geological Survey scientists and National Park Service resource managers to work in partnership to support a broad range of policy and management needs related to high-priority water-quality issues in national parks. In the Big South Fork, project work has included 1) 1999 - Develop Stream Flow Measurement Network; 2) 2002 - Effects of Oil and Gas Operations on Ground-Water Quality 3) 2004 - Restoration of Federally Listed Mussel Species and Water Quality Monitoring in Heavily Coal Mined Area; 4) 2015 - Determine Occurrence, Sources, and Potential for Biodegradation of Endocrine Disrupting Chemicals in Protected-River Systems of the National Park Service Southeast Region; 5) 2006 Fate and transport of petroleum hydrocarbons in soil and ground water
State Resources - TENNESSEE
TN DIVISION OF WATER RESOURCES
Regional Water Resources Planning Guidelines for Tennessee
These guidelines include recommended procedures for regional water resources planning that should be utilized in other regions across the state.
River Basins Regulated by the Inter-Basin Transfer Website
Information about the Inter-basin Water Transfer Act which regulates certain inter-basin water transfers. An inter-basin transfer occurs when water is withdrawn from any of the 10 watersheds listed in Section 4 of the Act (includes portion of Cumberland River Basin) and transferred directly or through intermediaries to a point outside that watershed.
Water Withdrawal Registration Program
The Division of Water Resources collects information on the withdrawal and use of water within Tennessee. The information is used to identify water uses and resources that may require management at critical times, especially drought conditions. The purpose of the program is to protect the water resources of Tennessee from over-utilization. This webpage includes Groundwater 305b Water Quality Reports and the withdrawal videos 'Hollow Ground: The Land of Caves, Sinkholes and Springs' and 'Drops of Water in Oceans of Sand.'
Links to streamflow gages in the City of Hopkinsville.
Interactive, water-related maps from the City of Murfreesboro include and Advanced Metering Infrastructure Map (locations that meters are currently being installed), a Water, Sewer, and Repurified Water Map, a Stormwater Map (flow direction for City Stormwater), and a Stream Assessment Map (visual stream assessment points and other stream characteristics).
Stormwater Management Manual Volume 2 - Procedures
This volume from Nashville's Stormwater Management Manual provides a compilation of readily available literature relevant to stormwater management activities in Nashville and Davidson County. Topics covered include hydrology, hydraulics (including gutter, inlet, culvert, storm sewer hydraulics, bridge, and detention/retention hydraulics), erosion and sediment control, outlet protection, data collection, computer programs, and stormwater pollution prevention programs. An additional Volume 3 of the Stormwater Management Manual provides a theoretical supplement to the technical guidelines and procedures presented in this Procedures volume.
HARPETH RIVER WATERSHED ASSOCIATION
These pages contain information about Harpeth River Watershed's concerns regarding the City of Franklin's plans for expanding it's drinking water plant and increasing withdrawals from the Harpeth.
Protect Our River Campaign
This webpage contains materials to help keep the community informed about the decisions being made that affect the Harpeth River's water quality. It includes recent press releases and an explanatory factsheets related to the watershed associations legal action's against the City of Franklin including: a Why Sue Franklin? factsheet; a Settlements with Smaller Sewer Plants factsheet; and a Lawsuit Summary factsheet.
Successful Resolution of Clean Water Act Lawsuit
This page provides an overview of the settlement of the federal Clean Water Act citizen suit brought by HRWA against the City of Franklin in 2014. It provides an explanation of why HRWA filed the lawsuit, the terms of the settlement, what the settlement achieved, and what citizens can expect moving forward. This page includes links to related news coverage, the settlement itself, and more.
RICHLAND CREEK WATERSHED ALLIANCE
A list of achievements by the Richland Creek Watershed Alliance.
STONES RIVER WATERSHED ASSOCIATION
Blueway Maps and Gages
Interactive maps and stream gages on the Stones River Blueway. Maps include Riverine Landmarks of the Stones River Watershed; Access Points from the East Fork through Percy Priest to the Cumberland; Access Points on the West and Middle Forks; Accesss Points on Stewart Creek. Stream gages include East Fork Gauge at Lascassas and West Fork Gauge at Murfreesboro.