Granlees
Granlees is a gravity dam located in Sacramento County, California, built in 1921. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Granlees
Granlees is a dam in Sacramento, California. The dam is owned by Consumnes Irrigation Association And Rancho Murieta Community Services District (private). It impounds the Cosumnes River.
The dam stands 17 feet tall and stretches 364 feet across, creates a reservoir covering 30 acres, has a maximum storage capacity of 75 acre-feet, and collects water from a drainage area of 535 square miles. Completed in 1921, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 11/20/2025.
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Location
| State | California |
| County | Sacramento |
| River/Stream | Cosumnes River |
| Coordinates | 38.49760, -121.06600 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 364 ft |
| Year Completed | 1921 (105 years old) |
Storage & Hydraulics
| NID Storage | 75 acre-ft |
| Max Storage | 75 acre-ft |
| Surface Area | 30 acres |
| Drainage Area | 535 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | Consumnes Irrigation Association and Rancho Murieta Community Services District |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/20/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00599 |
| Federal ID | CA00599 |
| More Info | State Dam Safety Program |