Upper Big Lake Dam
Upper Big Lake Dam is an earth dam located in Mississippi County, Missouri, built in 1973. It carries a Low hazard potential classification.
About Upper Big Lake Dam
The primary purpose of Upper Big Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Mo Dept Of Conservation (state). It impounds the Big Lake Ditch near Cairo Ill.
The dam stands 10 feet tall, creates a reservoir covering 20 acres, has a maximum storage capacity of 107 acre-feet, and collects water from a drainage area of 470 square miles. Completed in 1973, 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 | Missouri |
| County | Mississippi |
| Nearest City | Cairo Ill |
| River/Stream | Big Lake Ditch |
| Coordinates | 36.95472, -89.36611 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Year Completed | 1973 (53 years old) |
Storage & Hydraulics
| NID Storage | 107 acre-ft |
| Max Storage | 107 acre-ft |
| Normal Storage | 40 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 470 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | MO DEPT OF CONSERVATION |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO40084 |
| Federal ID | MO40084 |
| More Info | State Dam Safety Program |