National Dam Safety Program. J. Seward Johnson Dam (NJ00770). Raritan River Basin, Cold Brook, Hunterdon County, New Jersey. Phase I. Inspection Report

National Dam Safety Program. J. Seward Johnson Dam (NJ00770). Raritan River Basin, Cold Brook, Hunterdon County, New Jersey. Phase I. Inspection Report
Author: Abraham Perea
Publisher:
Total Pages: 53
Release: 1981
Genre:
ISBN:

This report cites results of a technical investigation as to the dam's adequacy. The inspection and evaluation of the dam is as prescribed by the National Dam Inspection Act, Public Law 92-367. The technical investigation includes visual inspection, review of available design and construction records, and preliminary structural and hydraulic and hydrologic calculations, as applicable. An assessment of the dam's general condition is included in the report. The dam appeared to be in a generally satisfactory condition with the water level at normal pool elevation at the time of inspection. The is a crescent-shaped structure (see Figure 2) constructed on a gentle and uniformly sloping hillside. Matted grass on the crest indicates the presence of an occasional vehicle, although severe rutting was not observed. Heavy brush and an occasional young conifer were noted in scattered areas on the left half of the downstream embankment, while somewhat thinner growth covered the upstream face of the dam. The alignment of the crest is satisfactory. No slumping, cracking, or seepage was observed although some rodent burrows were noted on the downstream slope and light erosion was evident at several locations on the upstream face.

Government Reports Annual Index

Government Reports Annual Index
Author:
Publisher:
Total Pages: 1192
Release: 1981
Genre: Research
ISBN:

Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.