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Department of Agriculture

Natural Resources Conservation Service

Marsh Creek Watershed, Tioga County, PA



SUMMARY: Pursuant to section 102(2)(c) of the National Environmental Policy Act of 1969, the Council on Environmental Quality Regulations (40 CFR Part 1500), and the Natural Resources Conservation Service Regulations (7 CFR Part 650), the Natural Resources Conservation Service, U.S. Department of Agriculture, gives notice that an environmental impact statement is not being prepared for PA-602 Hamilton Dam in the Marsh Creek Watershed, Tioga County, Pennsylvania.


The environmental assessment of this federally assisted action indicates that the project will not cause significant local, regional, or national impacts on the environment.  As a result of these findings Denise Coleman, State Conservationist, has determined that the preparation and review of an environmental impact statement is not needed for this project.

The purpose of the project is to provide flood damage reduction for recurrences up to and including a 100-year, 24-hour flood currently provided by PA-602 Hamilton Dam for public safety, bridges, roads, agricultural and other lands, buildings, structures, infrastructure, and other features, enhance the existing secondary water supply storage for the Borough of Wellsboro, maintain the incidental recreational and habitat values at Hamilton Lake (and adjacent riparian lands), and comply with current applicable design, performance, and safety criteria for a High Hazard potential dam.  Planned works of improvement include: installing labyrinth weir auxiliary spillway with roller-compacted concrete lined exit channel, modifying principal spillway riser to raise permanent pool two feet for additional water supply, installing additional embankment drainage system, additional riprap on upstream face of dam for wave protection, installing low flow augmentation works on principal spillway riser, and extending the 48-inch-diameter principal spillway conduit and constructing a new impact basin.

The notice of finding of no significant impact (FONSI) has been forwarded to the Environmental Protection Agency and to various Federal, State, and local agencies and interested parties. You may obtain a copy of the final environmental assessment and Finding of No Significant Impact by navigating to the Watershed Protection and Flood Prevention Program section of the Pennsylvania NRCS webpage or click here: "FINDING OF NO SIGNIFICANT IMPACT". Any questions please contact Ms. Heather Smeltz, Civil Engineer, USDA-NRCS, 359 East Park Drive, Harrisburg, PA  17111.


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