Accession Number:

ADA070616

Title:

National Dam Inspection Program. Tamarack Lake Dam 'A' (NDI-PA-00181, PennDER No. 20-47A, SCS No. PA-461A), Ohio River Basin, Mill Run, Crawford County, Commonwealth of Pennsylvania. Phase I Inspection Report,

Descriptive Note:

Corporate Author:

BAKER (MICHAEL) JR INC BEAVER PA

Personal Author(s):

Report Date:

1979-05-01

Pagination or Media Count:

95.0

Abstract:

Tamarack Lake is impounded by two separate dams at opposite ends of the reservoir. Tamarack Lake Dam A is located at the northern end of the reservoir and consists of a main embankment, emergency spillway channel, riser intake and outlet conduit, and a diversion dam located to the left of the emergency spillway channel. Tamarack Lake Dam B is located at the southern end of the reservoir and consists of a main embankment, emergency spillway channel, riser intake and outlet conduit, and a saddle dike located to the left of the emergency spillway channel. Tamarack Lake Dam A is 22 feet high and approximately 1000 feet long. A clay core and cutoff trench extend throughout the length of the dam. The minimum width of the core and cutoff trench is 10 feet. The cutoff trench varies in depth below the original ground surface from 4 to 13 feet with the lowest elevation 1195.0 feet near the location of the outlet conduit.

Subject Categories:

  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE