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Clean Watersheds Needs Survey

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CWNS 2008 Data and Reports

Detailed reports display selected CWNS data for chosen geographic areas. The output is displayed in tables which can be exported as csv files.
1. Select Data Area of Interest    

* Cannot be combined with other data areas.
CWNS 2008 has very complete and quality assured unit process data for facilities with greater than 10 MGD design flow. For smaller facilities, CWNS 2004 has much more complete data. Some of the CWNS 2004 unit process data has not been updated since the 1990s or 1980s. Here is a summary of facilities with unit process data by CWNS year and by design flow range (green shading indicates which dataset is recommended for each flow range):
Total # of Facilities
with Unit Process
   Number of Facilities with Unit Process Data by
Flow Range (MGD)
Data >10 >1 & <10 >0 & <1 0 or blank
CWNS 2008 3,921 739 567 1,714 901
CWNS 2004 18,352 720 3,290 11,462 2,880
2. Select Geographic Area of Interest    

* If no unit process is selected, then report is displayed for all unit processes.
Run Report

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