The Hill Ranch

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

CountySonoma
Nearest CityOakmont
River/StreamSanta Rosa Cr
Coordinates38.44460, -122.59070

Physical Characteristics

Dam TypeEarth
NID Height49 ft
Dam Height49 ft
Dam Length202 ft
Year Completed1955 (71 years old)

Storage & Hydraulics

NID Storage160 acre-ft
Max Storage160 acre-ft
Surface Area11 acres
Drainage Area0 sq mi

Ownership & Safety

PurposeWater Supply
OwnerMark Whitt and Thia Kellner Hill Revocable Trust
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection06/05/2025
Emergency Action PlanYes

Identifiers

NID IDCA01273
Federal IDCA01273
More InfoState Dam Safety Program

Nearby Dams

Annadel No. 1 2.7 mi High Santa Rosa Creek Reservoir 3.3 mi High Matanzas Creek 4.2 mi High Lake Ralphine 4.3 mi High Middle Fork Brush Creek 5.3 mi High Piner Creek 6.4 mi High St. Helena Ler 6.9 mi High Suttenfield 7.3 mi High Fountaingrove 7.4 mi High Fern Lake 7.7 mi High