Allegheny River WI/PWL
This is the most current Waterbody Inventory/Priority Waterbodies List (WI/PWL) water quality assessment information for the waters of the Allegheny River Basin. The assessments are based on data and information collected through the 2012 NYSDEC sampling season. Individual assessment Fact Sheets for some waterbodies may have been subsequently updated where appropriate to reflect more recent information.
In order to ease viewing/downloading, this information has been segmented into separate smaller files. Individual water body segment Fact Sheets are grouped together by smaller watershed (10-digit Hydrologic Unit Code, or HUC10 Watershed). Use the map and HUC10 index below to find, view and download the water quality assessment information for the waterbody of interest to you.
A summary assessment of overall water quality in the Allegheny River Basin was completed in May 2007. This basin summary may not reflect more recent reassessment of some individual waterbodies.
Allegheny River Basin HUC10 Watersheds
Upper Allegheny Sub-Basin (PDF, 209 KB)
- 0501000112 - Lower Allegheny Watershed
- 0501000108 - Middle Allegheny Watershed
- 0501000107 - Great Valley Creek Watershed
- 0501000106 - Tunungwant Creek Watershed
- 0501000105 - Upper Allegheny Watershed
- 0501000104 - Ischua Creek Watershed
- 0501000103 - Allegheny Headwaters Watershed
- 0501000102 - Oswayo Creek Watershed
Conewango River Sub-Basin
- 0501000205 - Lower Conewango Creek Watershed (PDF, 143 KB)
- 0501000204 - Middle Conewango Creek Watershed (PDF, 208 KB)
- 0501000203 - Cassadaga Creek Watershed (currently under review)
- 0501000202 - Chautauqua Lake Watershed (PDF, 263 KB)
- 0501000201 - Upper Conewango Creek Watershed PDF, 169 KB)
Brokenstraw Creek Sub-Basin
0501000111 - Brokenstraw Creek Watershed (PDF, 539 KB)
050501000110 - Little Brokenstraw Creek Watershed (PF, 539 KB)
French Creek Sub-Basin
- 0501000401 - West Branch French Creek Watershed (PDF, 519 KB)
Assessment Methodology (PDF, 132 KB)
WI/PWL Data Sheet Definitions (PDF, 82 KB)
Index of Waterbodies (PDF, 69 KB) - Alphabetically and by county.
Allegheny River Basin Assessment
The most recent summary assessment of overall water quality in the entire Allegheny Basin was completed in May 2007. This basin summary may not reflect subsequent assessment of some individual waterbodies.
Basin Assessment (PDF, 757 KB) - Includes a brief summary of water quality in the entire basin.
Water Quality Assessment Map (PDF, 895 KB)
Previous WI/PWL Reports
The previous (May 2007) WI/PWL Report for The Allegheny River Basin (PDF, 2.22 MB) is also available.
For additional information and answers to questions about this water quality assessment, please use the contact information at the right to reach us by e-mail, phone or in writing.