Lake Tappan Dam

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateNew Jersey
CountyBergen
Nearest CityOld Tappan
River/StreamHackensack River
Coordinates41.01812, -74.00115

Physical Characteristics

Dam TypeEarth
NID Height34 ft
Dam Height34 ft
Dam Length590 ft
Year Completed1966 (60 years old)

Storage & Hydraulics

NID Storage13,600 acre-ft
Max Storage13,600 acre-ft
Normal Storage11,815 acre-ft
Surface Area560 acres
Drainage Area49 sq mi
Max Discharge27,000 cfs

Ownership & Safety

PurposeWater Supply
OwnerSUEZ Water New Jersey, Inc.
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection12/06/2024
Emergency Action PlanYes

Identifiers

NID IDNJ00246
Federal IDNJ00246
More InfoState Dam Safety Program

Nearby Dams

Lake Tappan Dike 0.6 mi Low Mill Pond Dam 2.4 mi High Woodcliff Lake Dam 2.5 mi High Washington Lake South Dam 3.8 mi Significant Washington Lake West Dam 3.8 mi Significant Hackensack Golf Club Dam 3.9 mi Significant Ibm Edcenter Dam A 4.0 mi Significant Oradell Reservoir Dam 4.5 mi High Brewster Dam 4.6 mi Significant Rocco Bunlno Dam 4.8 mi Significant