StreamStats is a web application (Web Tool) for water-resources planning and engineering purposes. The map-based user interface can be used to delineate drainage areas for user-selected sites on streams, generate basin characteristics and estimate flow statistics for the selected sites. Users also can select the locations of USGS data-collection stations, shown as triangles on the StreamStats map, to get flow statistics and other station-specific information.
2022 Update
New Jersey StreamStats database has been updated with improved base elevation information and stream centerlines (see Data tab). Prior to the update it was based on 10-meter horizontal-resolution elevation data and 1:24,000-based hydrography. It is now based on 10-foot horizontal-resolution elevation data and 1:2,400 scale hydrography. In both cases, this is the best resolution/scale of any StreamStats state-wide project to date. New functionality was also developed to provide average watershed land slope based on the lag method in addition to 10-85 channel slope.
With this accuracy, New Jersey StreamStats can be used for watershed analysis to much smaller basins than is currently possible for any other StreamStats project. It has a tighter fit with elevations along the channels to support future automated floodplain, bankfull, and culvert analysis. More accurate river morphology analysis could also be considered with this level of detail.
StreamStats for New Jersey can be used to estimate instantaneous flood discharges and monthly flow-duration and monthly low-flow frequency statistics for ungaged streams. All peak and low flow equations have remained the same for this StreamStats update. Streamflow statistics and basin characteristics produced by this version may deviate slightly from those generated previously. These deviations were not found to differ significantly among state regions and were distributed normally. Work has begun to develop new statewide equations to estimate flood discharges. These are planned to be integrated into New Jersey StreamStats when available.
Use
StreamStats for New Jersey can be used to estimate instantaneous flood discharges with exceedance probabilities of 0.5, 0.2, 0.1, 0.04, 0.02, 0.01, and 0.002 for ungaged, unregulated or slightly regulated, non-tidal streams in New Jersey. These exceedance probabilities correspond to recurrence intervals of 2-, 5-, 10-, 25-, 50-, 100-, and 500-years, respectively.
StreamStats for New Jersey also can be used to estimate monthly flow-duration and monthly low-flow frequency statistics for ungaged streams in Coastal Plain and non-coastal regions of New Jersey for baseline and current land- and water-use conditions. The equations were developed to estimate 87 different streamflow statistics, which include the monthly 99-, 90-, 85-, 75-, 50-, and 25-percentile flow-durations of the minimum 1-day daily flow; the August–September 99-, 90-, and 75-percentile minimum 1-day daily flow; and the monthly 7-day, 10-year (M7D10Y) low-flow frequency.
Documentation
The reports (Publications tab) present the regression equations used to estimate the noted streamflow statistics, describe the errors associated with the estimates, and describe the methods used to develop the equations and to measure the basin characteristics used in the equations. Users should familiarize themselves with the reports before using StreamStats to obtain estimates of streamflow statistics for gaged and ungaged sites.
NOTE 1: Although 1990 population density was used for the development of the regression equations in SIR 2009-5167, the New Jersey StreamStats application uses the more current 2000 population-density data.
NOTE 2: Watson and McHugh (2014) provide two sets of regression equations for flow duration and low-flow frequency statistics, intended to reflect conditions for a “base” and a “current” period. The “base” period is defined as the years a streamgage had little to no change in development and water use. The “current” period is defined as the 1989–2008 water years (Oct. 1, 1988 to Sept. 30, 2008). The base period of record is representative of a period when the basin was unaffected by change in development. The current period is representative of more recent increased development.
StreamStats: Streamflow Statistics and Spatial Analysis Tools for Water-Resources Applications
New Jersey StreamStats digital elevation, flow direction, and flow accumulation GIS data 2022
Basin characteristics rasters for New Jersey StreamStats 2022
These reports provide the scientific basis of the StreamStats data, models, and results for New Jersey.
New Jersey StreamStats: A web application for streamflow statistics and basin characteristics
Regional regression equations for the estimation of selected monthly low-flow duration and frequency statistics at ungaged sites on streams in New Jersey
Methodology for Estimation of Flood Magnitude and Frequency for New Jersey Streams
StreamStats Application
StreamStats provides access to spatial analytical tools that are useful for water-resources planning and management, and for engineering and design purposes. The map-based user interface can be used to delineate drainage areas, get basin characteristics and estimates of flow statistics, and more. Available information varies from state to state.
Below are partners associated with this project.
- Overview
StreamStats is a web application (Web Tool) for water-resources planning and engineering purposes. The map-based user interface can be used to delineate drainage areas for user-selected sites on streams, generate basin characteristics and estimate flow statistics for the selected sites. Users also can select the locations of USGS data-collection stations, shown as triangles on the StreamStats map, to get flow statistics and other station-specific information.
2022 Update
New Jersey StreamStats database has been updated with improved base elevation information and stream centerlines (see Data tab). Prior to the update it was based on 10-meter horizontal-resolution elevation data and 1:24,000-based hydrography. It is now based on 10-foot horizontal-resolution elevation data and 1:2,400 scale hydrography. In both cases, this is the best resolution/scale of any StreamStats state-wide project to date. New functionality was also developed to provide average watershed land slope based on the lag method in addition to 10-85 channel slope.
StreamStats in New Jersey screenshot With this accuracy, New Jersey StreamStats can be used for watershed analysis to much smaller basins than is currently possible for any other StreamStats project. It has a tighter fit with elevations along the channels to support future automated floodplain, bankfull, and culvert analysis. More accurate river morphology analysis could also be considered with this level of detail.
StreamStats for New Jersey can be used to estimate instantaneous flood discharges and monthly flow-duration and monthly low-flow frequency statistics for ungaged streams. All peak and low flow equations have remained the same for this StreamStats update. Streamflow statistics and basin characteristics produced by this version may deviate slightly from those generated previously. These deviations were not found to differ significantly among state regions and were distributed normally. Work has begun to develop new statewide equations to estimate flood discharges. These are planned to be integrated into New Jersey StreamStats when available.
Use
StreamStats for New Jersey can be used to estimate instantaneous flood discharges with exceedance probabilities of 0.5, 0.2, 0.1, 0.04, 0.02, 0.01, and 0.002 for ungaged, unregulated or slightly regulated, non-tidal streams in New Jersey. These exceedance probabilities correspond to recurrence intervals of 2-, 5-, 10-, 25-, 50-, 100-, and 500-years, respectively.
StreamStats for New Jersey also can be used to estimate monthly flow-duration and monthly low-flow frequency statistics for ungaged streams in Coastal Plain and non-coastal regions of New Jersey for baseline and current land- and water-use conditions. The equations were developed to estimate 87 different streamflow statistics, which include the monthly 99-, 90-, 85-, 75-, 50-, and 25-percentile flow-durations of the minimum 1-day daily flow; the August–September 99-, 90-, and 75-percentile minimum 1-day daily flow; and the monthly 7-day, 10-year (M7D10Y) low-flow frequency.
Documentation
The reports (Publications tab) present the regression equations used to estimate the noted streamflow statistics, describe the errors associated with the estimates, and describe the methods used to develop the equations and to measure the basin characteristics used in the equations. Users should familiarize themselves with the reports before using StreamStats to obtain estimates of streamflow statistics for gaged and ungaged sites.
NOTE 1: Although 1990 population density was used for the development of the regression equations in SIR 2009-5167, the New Jersey StreamStats application uses the more current 2000 population-density data.
NOTE 2: Watson and McHugh (2014) provide two sets of regression equations for flow duration and low-flow frequency statistics, intended to reflect conditions for a “base” and a “current” period. The “base” period is defined as the years a streamgage had little to no change in development and water use. The “current” period is defined as the 1989–2008 water years (Oct. 1, 1988 to Sept. 30, 2008). The base period of record is representative of a period when the basin was unaffected by change in development. The current period is representative of more recent increased development.
- Science
StreamStats: Streamflow Statistics and Spatial Analysis Tools for Water-Resources Applications
StreamStats provides access to spatial analytical tools that are useful for water-resources planning and management, and for engineering and design purposes. The map-based user interface can be used to delineate drainage areas, get basin characteristics and estimates of flow statistics, and more. Available information varies from state to state. - Data
New Jersey StreamStats digital elevation, flow direction, and flow accumulation GIS data 2022
The U.S. Geological Survey (USGS), in cooperation with the New Jersey Department of Environmental Protection (NJDEP), prepared hydro-conditioned geographic information systems (GIS) data layers for use in the updated New Jersey StreamStats 2022 application (U.S. Geological Survey, 2022). This update features improvements in base-elevation resolution from 10 meters to 10 feet and stream centerlineBasin characteristics rasters for New Jersey StreamStats 2022
The U.S. Geological Survey (USGS), in cooperation with the New Jersey Department of Environmental Protection (NJDEP), calculated several basin characteristics as part of the updated New Jersey StreamStats 2022 application (U.S. Geological Survey, 2022). These datasets are raster representations of various environmental, geological, and land use attributes within the New Jersey StreamStats 2022 stu - Publications
These reports provide the scientific basis of the StreamStats data, models, and results for New Jersey.
New Jersey StreamStats: A web application for streamflow statistics and basin characteristics
StreamStats is an interactive, map-based web application from the U.S. Geological Survey (USGS) that allows users to easily obtain streamflow statistics and watershed characteristics for both gaged and ungaged sites on streams throughout New Jersey. Users can determine flood magnitude and frequency, monthly flow-duration, monthly low-flow frequency statistics, and watershed characteristics for ungAuthorsKara M. Watson, Jon A. JanowiczRegional regression equations for the estimation of selected monthly low-flow duration and frequency statistics at ungaged sites on streams in New Jersey
Regional regression equations were developed for estimating monthly flow-duration and monthly low-flow frequency statistics for ungaged streams in Coastal Plain and non-coastal regions of New Jersey for baseline and current land- and water-use conditions. The equations were developed to estimate 87 different streamflow statistics, which include the monthly 99-, 90-, 85-, 75-, 50-, and 25-percentilAuthorsKara M. Watson, Amy R. McHughMethodology for Estimation of Flood Magnitude and Frequency for New Jersey Streams
Methodologies were developed for estimating flood magnitudes at the 2-, 5-, 10-, 25-, 50-, 100-, and 500-year recurrence intervals for unregulated or slightly regulated streams in New Jersey. Regression equations that incorporate basin characteristics were developed to estimate flood magnitude and frequency for streams throughout the State by use of a generalized least squares regression analysis.AuthorsKara M. Watson, Robert D. Schopp - Web Tools
StreamStats Application
StreamStats provides access to spatial analytical tools that are useful for water-resources planning and management, and for engineering and design purposes. The map-based user interface can be used to delineate drainage areas, get basin characteristics and estimates of flow statistics, and more. Available information varies from state to state.
ByWater Resources Mission Area, Idaho Water Science Center, New England Water Science Center, New Jersey Water Science Center, New Mexico Water Science Center, New York Water Science Center, Oregon Water Science Center, Pacific Islands Water Science Center, Pennsylvania Water Science Center, South Atlantic Water Science Center (SAWSC), Upper Midwest Water Science Center, Wyoming-Montana Water Science Center - Partners
Below are partners associated with this project.