Chamberlain No. 1
Chamberlain No. 1 is an earth dam located in Converse County, Wyoming, built in 1965. It carries a Significant hazard potential classification and has a fair condition assessment.
About Chamberlain No. 1
The primary purpose of Chamberlain No. 1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Laprele Irrigation District (private). It impounds the Laprele Creek near Douglas.
The dam stands 27 feet tall and stretches 2,100 feet across, creates a reservoir covering 40 acres, has a maximum storage capacity of 727 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1965, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 04/14/2022.
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Location
| State | Wyoming |
| County | Converse |
| Nearest City | Douglas |
| River/Stream | Laprele Creek |
| Coordinates | 42.77720, -105.63480 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 2,100 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 727 acre-ft |
| Max Storage | 727 acre-ft |
| Normal Storage | 505 acre-ft |
| Surface Area | 40 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 3,688 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | LAPRELE IRRIGATION DISTRICT |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 04/14/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00200 |
| Federal ID | WY00200 |
| More Info | State Dam Safety Program |