Lake Grinnell Dam

Significant HazardPoor ConditionEmergency Action Plan: Yes

Location

StateNew Jersey
CountySussex
River/StreamWallkill River-TR
Coordinates41.10137, -74.63590

Physical Characteristics

Dam TypeEarth
NID Height12 ft
Dam Height12 ft
Dam Length195 ft
Year Completed1900 (126 years old)

Storage & Hydraulics

NID Storage150 acre-ft
Normal Storage150 acre-ft
Surface Area46 acres
Drainage Area2 sq mi
Max Discharge30 cfs

Ownership & Safety

PurposeRecreation
OwnerLake Grinnell Homeowners Association
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentPoor
Last Inspection04/12/2024
Emergency Action PlanYes

Identifiers

NID IDNJ00289
Federal IDNJ00289
More InfoState Dam Safety Program

Nearby Dams

Franklin Pond Dam 2.6 mi Significant Heaters Pond Dam 3.3 mi High Hawthorne Lake Dam 3.8 mi Low Beaver Lake Dam 4.0 mi Low Morris Lake Dam 4.3 mi High Lake Gerard Dam 4.4 mi High Glen Lake Dam 4.6 mi High Lake Gerard Dike C 4.6 mi High Fox Hollow Lake Dam 4.6 mi Significant Glauberman Lake Dam 4.7 mi Low