National Dam Safety Program. N.J. No Name Number 30 Dam (NJ00339), Delaware River Basin, Weldon Brook, Morris County, New Jersey. Phase I Inspection Report.

The dam is an earth embankment approximately 500 feet long with a maximum height of about 24 feet. The spillway is a broad crested concrete overflow weir located about 100 feet from the right abutment. The crest length of the weir is 10.5 feet including a 4 feet long notch one foot deep. The spillway discharges onto a rock outcrop from which the water falls freely to the downstream channel. The reservoir drain system is a 12-inch diameter reinforced concrete pipe located about 50 feet left of the spillway. A concrete control box is located on the upstream face of the embankment and the reservoir drain pipe outlets at the downstream toe of the dam. Based on visual inspection, available records, calculations and past operational performance, N.J. No Name No. 30 Dam, is judged to be in poor overall condition. The dam's spillway is considered inadequate because a flow equivalent to 20 percent of the Spillway Design Flood (SDF) would cause the dam to be overtopped.