Areas With Special Requirments

The NYS SPDES General Permit for Stormwater Discharges from Construction Activity (GP-0-08-001) cannot be used for construction activities in areas that:

  • are tributary to waters of the state classified as AA or AA-s; and
  • disturb land with no existing impervious cover and where the Soil Slope Phase is identified as an E or F on the USDA Soil Survey.

Construction activities in these areas must instead be covered by an individual SPDES permit from NYS.  In the STC region, this special requirement applies to watershed draining into the following AA waterbodies: 

  • Keuka Lake
  • Seneca Lake
  • Lime Kiln Creek (in Towns of Fremont and Dansville)
  • Reservoir Creek (in Towns of Cohocton and Prattsburgh)
  • unnamed tributaries to Waverly Reservoirs (in Town of Chemung)

STC has developed maps showing the watershed boundaries and areas with soils mapped as E and F slopes for some of these AA waterbodies.  Additional maps will be developed.  Assistance with determining whether a site is ineligible for coverage under the general permit can be obtained by contacting .

Maps of areas where construction activity requires an individual SPDES permit (large files):

Keuka Lake Watershed, Towns of Wayne and Pultney

Keuka Lake Watershed, Towns of Urbana, Wayne, Bath, Wheeler and Village of Hammondsport

Lime Kiln Creek Watershed, Towns of Fremont and Dansville

Reservoir Creek Watershed, Towns of Cohocton and Prattsburgh

NRCS Soil Survey information is available from the County Soil and Water Conservation District or at the NRCS Web Soil Survey site at:


STC Regional Planning & Development Board  8 Denison Parkway East Ste 310 Corning, NY 14830
Phone 607.962.5092
Fax 607.962.3400
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