Accession Number:

ADA088784

Title:

National Dam Inspection Program. Lake Roland Dam. (NDI I.D. Number MD-104) Chesapeake Bay Basin, Jones Falls, Baltimore County, Maryland. Phase I Inspection Report,

Descriptive Note:

Corporate Author:

ACKENHEIL AND ASSOCIATES INC BALTIMORE MD

Report Date:

1979-07-01

Pagination or Media Count:

81.0

Abstract:

Based on the evaluation of performance history, stability calculation results, and visual observations of conditions as they existed on the dates of the field reconnaissances, the general condition of Lake Roland Dam is considered to be fair. However, due to a seriously inadequate overflow section spillway the dam is categorized unsafe, non-emergency in accordance with recommended criteria. Lake Roland Dam is classified as an intermediate size, high hazard dam with a recommended spillway design flood of 100 percent PMF. Flood discharge capacity was found to be seriously inadequate based on the following data non-overtopping flood discharge capacity is 10 percent PMF, and Failure of dam resulting from 35 percent PMF overtopping significantly increases the downstream loss of life and damage potential compared to that which would exist just before dam failure. The reservoir drain slide gates are inoperable and judged inadequate in their present condition. The ability to drain the reservoir and perform remedial work on submerged portions of the dam requires that the reservoir drain be operational.

Subject Categories:

  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE