Grohs Reservoir
Grohs Reservoir is an earth dam located in Klamath County, Oregon, built in 1959. It carries a Low hazard potential classification.
About Grohs Reservoir
The primary purpose of Grohs Reservoir is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Phil Grohs (private). It impounds the Rock Creek near Bonanza.
The dam stands 16 feet tall and stretches 2,250 feet across, creates a reservoir covering 99 acres, has a maximum storage capacity of 882 acre-feet, and collects water from a drainage area of 10 square miles. Completed in 1959, 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. The most recent inspection on record was 08/12/2015. That was over 10 years ago.
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Location
| State | Oregon |
| County | Klamath |
| Nearest City | Bonanza |
| River/Stream | Rock Creek |
| Coordinates | 42.01347, -120.94534 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 14 ft |
| Dam Length | 2,250 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 882 acre-ft |
| Max Storage | 882 acre-ft |
| Normal Storage | 882 acre-ft |
| Surface Area | 99 acres |
| Drainage Area | 10 sq mi |
| Max Discharge | 241 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | PHIL GROHS |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 08/12/2015 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00306 |
| Federal ID | OR00306 |
| More Info | State Dam Safety Program |