-
Federal
SWAT - Soil and Water Assessment Tool
Department of Agriculture —
The Soil and Water Assessment Tool (SWAT) is a public domain model jointly developed by USDA Agricultural Research Service (USDA-ARS) and Texas A&M AgriLife... -
Identify Your Watershed and Sewer System Area App
District of Columbia —
This app displays a series of general information for an address, location, or where the user clicks in DC. Some information returned are:Municipal Separate Storm... -
State
Subregional Basin Polygon
State of Connecticut —
See full Data Guide here.Subregional Drainage Basic Set: Connecticut Subregional Drainage Basins is 1:24,000-scale, polygon and line feature data that define... -
State
Local Basin Lines
State of Connecticut —
See full Data Guide here. Drainage Basin Set: Connecticut Drainage Basins is 1:24,000-scale, polygon and line feature data that define natural drainage areas in... -
State
2-digit HU (Region) NGDA
State of Oregon —
Abstract: This file contains Hydrologic Unit (HU) polygon boundaries for the United States, Puerto Rico, and the U.S. Virgin Islands. The data is a seamless National... -
State
Drainage Basin Lines
State of Connecticut —
See full Data Guide here. Drainage Basin Set: Connecticut Drainage Basins is 1:24,000-scale, polygon and line feature data that define natural drainage areas in... -
State
Major Basin Polygon
State of Connecticut —
See full Data Guide here.Major Drainage Basin Set: Connecticut Major Drainage Basins is 1:24,000-scale, polygon and line feature data that define Major drainage basin... -
State
California High Hazard Zones (Tier 2)
State of California —
On October 30, 2015 Governor Brown issued an emergency declaration requiring public agencies to identify areas of tree mortality that hold the greatest potential to... -
City
Creek Watersheds
City of Seattle —
This layer displays the urban creek watersheds. Creek watershed flow is in the contentious and intermittent natural surface water flow identified and recognized as a... -
State
California Native Fish Species by Watershed [ds1353]
State of California —
This dataset was created using the 123 PISCES extant species range layers listed below in the table. The PISCES datasets were converted to rasters using GIS and then... -
State
VT Water Classifications
Vermont Center for Geographic Information —
The Vermont Water Quality Standards (VTWQS) are rules intended to achieve the goals of the Vermont Surface Water Strategy, as well as the objective of the federal... -
State
6-digit HU (Basin) NGDA
State of Oregon —
Abstract: This file contains Hydrologic Unit (HU) polygon boundaries for the United States, Puerto Rico, and the U.S. Virgin Islands. The data is a seamless National... -
State
California Native Fish Species by Watershed [ds1353]
State of California —
This dataset was created using the 123 PISCES extant species range layers listed below in the table. The PISCES datasets were converted to rasters using GIS and then... -
State
California Native Fish Species by Watershed [ds1353] Extended Table
State of California —
This dataset was created using the 123 PISCES extant species range layers listed below in the table. The PISCES datasets were converted to rasters using GIS and then... -
State
16-digit HU NGDA
State of Oregon —
Abstract: This file contains Hydrologic Unit (HU) polygon boundaries for the United States, Puerto Rico, and the U.S. Virgin Islands. The data is a seamless National... -
State
i04 VICGrid
State of California —
VIC grid polygons represent the Variable Infiltration Capacity (VIC) model spatial discretization of input forcing parameters (precipitation, temperature, wind... -
City
Contours 5ft 2021 Cedar River Watershed
City of Seattle —
Cedar River watershed area 5ft contours derived from Lidar captured in 2021. Contour lines display at 5ft, 25ft, 50ft, 100ft, 200ft and 400ft intervals dependent on...