Charlotts Webb
Charlotts Webb is an earth dam located in Cascade County, Montana, built in 1960. It carries a Low hazard potential classification.
About Charlotts Webb
The primary purpose of Charlotts Webb is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Holman Grain Co. (private). It impounds the Portage Coulee near Portage.
The dam stands 20 feet tall and stretches 325 feet across, and has a maximum storage capacity of 82 acre-feet. Completed in 1960, the structure is well into its service life at over 50 years 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.
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Location
| State | Montana |
| County | Cascade |
| Nearest City | Portage |
| River/Stream | Portage Coulee |
| Coordinates | 47.64470, -111.15080 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 325 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 82 acre-ft |
| Max Storage | 82 acre-ft |
| Normal Storage | 42 acre-ft |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | HOLMAN GRAIN CO. |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03287 |
| Federal ID | MT03287 |
| More Info | State Dam Safety Program |