Hidden Valley Lake Dam

Significant HazardNot Available ConditionEmergency Action Plan: Yes

Location

StateIllinois
CountyOgle
Nearest CitySTILLMAN VALLEY
River/StreamTRIB STILLMAN CREEK
Coordinates42.03572, -89.14262

Physical Characteristics

Dam TypeEarth
NID Height16 ft
Dam Height16 ft
Dam Length505 ft
Year Completed1968 (58 years old)

Storage & Hydraulics

NID Storage256 acre-ft
Max Storage256 acre-ft
Normal Storage40 acre-ft
Surface Area19 acres
Drainage Area2 sq mi
Max Discharge2,116 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeRecreation
OwnerRASMUSSEN & GIANNINI
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentNot Available
Last Inspection06/04/2024
Emergency Action PlanYes

Identifiers

NID IDIL00671
Federal IDIL00671
More InfoState Dam Safety Program

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