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Data Online- 21 SANGAMON RIVER AT ROBY, IL - Water Data
- The USGS National Water Information System provides real-time and historical data on surface water flow, ground water levels, and water quality of streams in the US.
- 22 SANGAMON RIVER NEAR BOLIVIA, IL - Water Data
- The USGS National Water Information System provides real-time and historical data on surface water flow, ground water levels, and water quality of streams in the US.
- 23 SANGAMON RIVER NEAR BUCKHART, IL - Water Data
- The USGS National Water Information System provides real-time and historical data on surface water flow, ground water levels, and water quality of streams in the US.
- 24 SANGAMON RIVER NEAR DAWSON, IL - Water Data
- The USGS National Water Information System provides real-time and historical data on surface water flow, ground water levels, and water quality of streams in the US.
- 25 South Fork Sangamon Watershed Profile
- Environmental Protection Agency website containing numerous links to environmental data about the South Fork Sangamon watershed.
- 26 South Fork Sangamon Watershed Resource Links
- USGS maintained site with links to data, projects, and publications on HUC watersheds
- 27 South Fork Sangamon Watershed Water Data
- The USGS National Water Information System provides real-time and historical data on surface water flow, ground water levels, and water quality of streams in the US.
- 28 Upper Sangamon Watershed Profile
- Environmental Protection Agency website containing numerous links to environmental data about the Upper Sangamon watershed.
- 29 Upper Sangamon Watershed Resource Links
- USGS maintained site with links to data, projects, and publications on HUC watersheds
- 30 Upper Sangamon Watershed Water Data
- The USGS National Water Information System provides real-time and historical data on surface water flow, ground water levels, and water quality of streams in the US.
- 31 Ammonia-N Concentrations in the Illinois River Watershed
- Thematic map showing the mean total Ammonia-N for each of the major sub-watersheds.
- Download Options: LoRes preview | HiRes (624 K) | Metadata
- 32 Average soil depth in the Illinois River Watershed
- Thematic map showing the average soil depth (inches) across the basin.
- Download Options: LoRes preview | HiRes (3.36 MB) | Metadata
- 33 Elevation in the Illinois River Watershed
- Thematic map showing elevation changes in the basin.
- Download Options: LoRes preview | HiRes (1.76 MB) | Metadata
- 34 Floodzones in the Illinois River Watershed
- Thematic map showing the 100 and 500 year floodzones across the basin as of 1986.
- Download Options: LoRes preview | HiRes (3.77 MB) | Metadata
- 35 Illinois Bluffs Watershed
- Thematic map of the Illinois Bluffs watershed showing roads, county boundaries, and elevation changes.
- Download Options: LoRes preview | HiRes (2.26 MB) | Metadata
- 36 Illinois County Boundaries, Polygons and Lines
- GIS data - zipped shapefile
- 37 Illinois Floodplain Maps
- ISWS resource providing preliminary and final maps of Illinois floodplains.
- 38 Illinois River Basin GIS Data Viewer
- Interactive map provided by the ISWS. Viewable layers include watersheds, rivers, water quality, geology, and groundwater.
- 39 Illinois River Basin Weather Stations
- The weather stations in this data set were gathered from the WDM database within the Basins watershed modeling program. Coordinates for the stations were exported from Basins, then formatted and imported into ArcGIS. This data set was created to support research at the Illinois State Water Survey. (shapefile, .zip archive)
- 40 Illinois River Watershed - Poster
- Poster-sized (26x38) map of the entire Illinois River Watershed. Part of the Illinois State Water Survey published Map Series (2003-1)
- Download Options: LoRes preview | HiRes (3.5 MB) | Metadata
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