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 individual waterbody assessment Fact Sheets are based on data and information collected through the 2012 NYSDEC sampling season. Assessments 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 HUC 10). Use the map and HUC 10 index below to find, view and download the water quality assessment information of interest to you.
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)
Allegheny River Basin HUC 10 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 (PDF, 171 KB)
- 0501000205 - Lower Conewango Creek Watershed
0501000204 - Middle Conewango Creek Watershed
0501000203 - Cassadaga Creek Watershed
0501000202 - Chautauqua Lake Watershed
- 0501000201 - Upper Conewango Creek Watershed
Brokenstraw Creek Sub-Basin
0501000111 - Brokenstraw Creek Watershed (PDF, 539 KB)
- 0501000110 - 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.
The previous (May 2007) WI/PWL Report for The Allegheny River Basin (PDF, 2.22 MB) is also available.
For 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.