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Data Online- 1 7-Day 10-Year Low Flow Maps
- These maps provide information on low flow conditions that might be expected to occur only during droughts (once in 10 years), and associated effluent discharges, water withdrawals, and flow regulations for most Illinois rivers and streams.
- 2 Alexander County 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.
- 3 CACHE RIVER AT SANDUSKY, 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.
- 4 Cache Watershed Profile
- Environmental Protection Agency website containing numerous links to environmental data about the Cache watershed.
- 5 Cache Watershed Resource Links
- USGS maintained site with links to data, projects, and publications on HUC watersheds.
- 6 Cache 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.
- 7 Flood Discharge Database
- FEMA-published and selected other statistical flood discharge values, searchable by watershed or county.
- 8 Illinois Water Quality
- EPA maintained website with links to all Illinois watershed water quality summary reports dating back to 1996.
- 9 Lower Ohio Watershed Profile
- Environmental Protection Agency website containing numerous links to environmental data about the Lower Ohio watershed.
- 10 Lower Ohio Watershed Resource Links
- USGS maintained site with links to data, projects, and publications on HUC watersheds.
- 11 Lower Ohio 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.
- 12 Mississippi River at Thebes, 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.
- 13 Monthly Climate Data- Cairo, IL
- Monthly precipitation and temperature data provided by the State Climatologist. Data available from 1901-present.
- 14 National Weather Service: River Watch, Mississippi River Basin
- Illinois River 5-day stage forecasts for three main river segments: Morris to LaSalle, Henry to Beardstown, and New LaGrange to Hardin. Includes links to Upper Mississippi Basin stage forecasts.
- 15 Upper Mississippi-Cape Girardeau Watershed Profile
- Environmental Protection Agency website containing numerous links to environmental data about the Upper Mississippi-Cape Girardeau watershed.
- 16 Upper Mississippi-Cape Girardeau Watershed Resource Links
- USGS maintained site with links to data, projects, and publications on HUC watersheds.
- 17 Upper Mississippi-Cape Girardeau 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.
- 18 Alexander County Orthophotography Data 1998-1999
- Illinois National Aerial Photography Program Digital Orthophotography quarter Quadrangle data for Alexander County in the Universal Transverse Mercator (UTM) coordinate system with a NAD83 datum.
- 19 Illinois County Boundaries, Polygons and Lines
- GIS data - zipped shapefile
- 20 Illinois Floodplain Maps
- ISWS resource providing preliminary and final maps of Illinois floodplains.
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