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Rapid Watershed Assessments


The Rapid Watershed Assessments (RWAs) consists of geographically displayed data layers, along with printable tabular watershed reports including summary data and source information. The RWAs draw on statewide data layers, clipped to the Hydrological Unit Codes (HUC) 8 watershed boundaries, in order to provide a watershed view of resource concerns that can be compared on a statewide scope.

The RWA layers compile the best readily-available statewide data, including:

* A general description of the location, size, and political units associated with the HUC 8 watershed.
* Physical description including land use/land cover, public lands, cropland types, common resource areas, stream flow data, etc.
* Potential resource concerns.
* Census and social data.
* References and data sources.

The information is general in nature and is not sufficiently detailed to be used in lieu of an area-wide or watershed plan. However, the information will provide a solid starting point for local stakeholders to use should they decide to proceed with a more detailed area-wide or watershed planning effort.

RWA National NRCS Fact Sheet

Maps and Tabular Watershed Reports (PDFs)

While RWA is a mapped-based tool, detailed information about the data is also available in tabular watershed reports. See table below. In the watershed reports, county-based data is spatially distributed according to HUC 8 watershed boundaries. The RWA data is not real-time. References to the data sources, including year, can be found in the watershed reports.

Please note that the data provided for Offsite Risk Index Factors (sheet/rill erosion potential, surface drainage, leach index, wind erosion, flood frequency, and surface & subsurface drainage) involve calculations that were designed for analysis within an individual county.  As with other county-based data, application of this data at the 8-digit watershed level provides information on these factors only at the watershed level, and does not accurately reflect individual sites within the watersheds.

Indiana Map of 8-Digit Watersheds

Map Instructions - How To Turn On and Off Layers In PDF Document
1) Open map of watershed
2) Click on layers tab on left side of screen, or click on View menu, then click on Navigational Panels and select Layers.
3) Click on the eyeball next to each layer to turn them on and off.

Auglaize Map
Auglaize Data

Lower Wabash Map
Lower Wabash Data

St. Marys Map
St. Marys Data

Blue-Sinking Map
Blue-Sinking Data

Lower White Map
Lower White Data

Sugar Map
Sugar Data

Chicago Map
Chicago Data

Middle Ohio-Laughery Map
Middle Ohio-Laughery Data

Tippecanoe Map
Tippecanoe Data

Driftwood Map
Driftwood Data

Mid. Wabash-Busseron Map
Mid. Wabash-Busseron Data

Upper East Fork White Map
Upper East Fork White Data

Flatrock-Haw Map
Flatrock-Haw Data

Mid. Wabash-Deer Map
Mid. Wabash-Deer Data

Upper Eel Map
Upper Eel Data

Highland-Pigeon Map
Highland-Pigeon Data

Mid. Wabash-Vermillion Map
Mid. Wabash-Vermillion Data

Upper Great Miami Map
Upper Great Miami Data

Iroquois Map
Iroquois Data

Mississinewa Map
Mississinewa Data

Upper Maumee Map
Upper Maumee Data

Kankakee Map
Kankakee Data

Muscatatuck Map
Muscatatuck Data

Upper Wabash Map
Upper Wabash Data
Upper Wabash RWA

Little Calumet-Galien Map
Little Calumet-Galien Data

Patoka Map
Patoka Data

Upper White Map
Upper White Data

Lower East Fork White Map
Lower East Fork White Data

Salamonie Map
Salamonie Data

Vermillion Map
Vermillion Data

Lower Eel Map
Lower Eel Data

Silver-Little Kentucky Map
Silver-Little Kentucky Data

Whitewater Map
Whitewater Data

Lower Great Miami Map
Lower Great Miami Data

St. Joseph Map
St. Joseph Data

Wildcat Map
Wildcat Data

Lower Ohio-Little Pigeon Map
Lower Ohio-Little Pigeon Data

St. Joseph-Maumee Map
St. Joeseph-Maumee Data


Links to Other Watershed Tools

Indiana Geological Survey: Indiana GIS Atlas

NRCS Geospatial Data Gateway

Indiana Water Quality Atlas

Indiana Water Monitoring Inventory

EPA Surf Your Watershed

Indiana Watershed Planning

Indiana Watershed Planning Guide

IDEM Watershed Specialists

Planning With POWER

Indiana’s Integrated Water Monitoring and Assessment Report (305(b)/303(d))

Watershed Inventory Workbook for Indiana

Indiana Watershed Leadership Program

EPA Nonpoint Source Pollution Homepage

Center for Watershed Protection

Brought to you by:
Indiana Rapid Watershed Assessments were developed by a partnership between the Natural Resources Conservation Service and the Indiana State Department of Agriculture, with input by an Advisory Committee.  The Advisory Committee included members and partners of the Indiana Conservation Partnership.  Special thanks to the Indiana Association of Soil and Water Conservation Districts and the Indiana Department of Environmental Management for their level of involvement.

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