Tat Momolikot
Dam in Pinal County, Arizona · Santa Rosa Wash · forms Lake St Clair
Height
85 ft
26 m (NID height)
Length
12,500 ft
3,810 m
Completed
1974
Lake St Clair today
1,494.73 ft
7 days ▼ 0.46 ft
vs full pool
▼ 14.27 ft
Normal storage
322 acre-ft
Reservoir level measured Oct 23, 2026, 10:00 AM MST. Full level page →
Facts
- Purposes
- Flood Risk Reduction; Irrigation
- Dam type
- Earth
- Structural height
- 85 ft
- Owner
- BIA (Federal; Tribal Government)
- Maximum storage
- 482,222 acre-ft
- Surface area
- 65 acres
- Hydraulic height
- 68 ft
- Drainage area
- 1,702 sq mi
- Spillway
- Uncontrolled, 1,012 ft wide
- Army Corps district
- Los Angeles District
- Also known as
- Lake St Clair
- NID ID
- AZ10008
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Dec 4, 2025. Search NID ID AZ10008 at nid.sec.usace.army.mil. Project website.