Will Lake #1

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

CountyNapa
Nearest CityCity of Napa
River/StreamTr Napa River
Coordinates38.27710, -122.34070

Physical Characteristics

Dam TypeEarth
NID Height40 ft
Dam Height40 ft
Dam Length750 ft
Year Completed2004 (22 years old)

Storage & Hydraulics

NID Storage89 acre-ft
Max Storage89 acre-ft
Surface Area6 acres
Drainage Area0 sq mi

Ownership & Safety

PurposeOther
OwnerC. Mondavi and Son, Inc.
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection01/13/2026
Emergency Action PlanYes

Identifiers

NID IDCA01463
Federal IDCA01463
More InfoState Dam Safety Program

Nearby Dams

Winery Lake 1.5 mi High Hudson Vineyards 1.7 mi Significant Scotts Canyon 1.8 mi Significant Buena Vista Winery 3.4 mi Significant Svcsd Reclamation Pond 2 4.7 mi Significant Lake Camille 4.8 mi High Svcsd Reclamation Pond 1 4.8 mi Significant Veeder Hills Dam 5.0 mi Significant Lake Cynthia 6.0 mi High Lake Marie 6.2 mi High