National Dam Inspection Program. Greenville Dam Number 3 (NDI Number PA 01081 PENN DER Number 431) Ohio River Basin. Little Shenango River, Mercer County, Pennsylvania. Greenville Municipal Authority. Phase I Inspection Report

摘要

Greenville Dam No. 3 is classified as a 'small' size, 'significant' hazard dam, with a recommended 1/2 PMF spillway design flood. Based on the review and evaluation of available design information, and visual observations of conditions as they existed on the date of the field reconnaissance, the general condition of Greenville Dam No. 3 is good. Seeps located at both downstream embankment junctions are not considered to represent a significant hazard to the dam at this time. However, a reasonable potential exists for the seeps to develop into a significant hazard. Periodic observation of the seeps by the dam owner is advised. Analysis using the HEC-1 Dam Safety Version computer program, indicates the spillway channel can pass a maximum of 43 percent PMF without overtopping the embankment crest. Spillway discharge capacity is assessed inadequate in accordance with guideline criteria.