Dayton
Dayton is an earth dam located in LaSalle County, Illinois, built in 1925. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Dayton
The primary purpose of Dayton is navigation. The dam maintains water levels sufficient for boat and barge traffic, supporting commercial or recreational navigation on the waterway. It impounds the Fox River near Ottawa.
The dam stands 26 feet tall and stretches 963 feet across, creates a reservoir covering 200 acres, has a maximum storage capacity of 1,800 acre-feet, and collects water from a drainage area of 2,642 square miles. Completed in 1925, 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 07/29/2019.
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Location
| State | Illinois |
| County | LaSalle |
| Nearest City | Ottawa |
| River/Stream | Fox River |
| Coordinates | 41.39000, -88.78760 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 23 ft |
| Dam Length | 963 ft |
| Year Completed | 1925 (101 years old) |
Storage & Hydraulics
| NID Storage | 1,800 acre-ft |
| Max Storage | 1,800 acre-ft |
| Normal Storage | 605 acre-ft |
| Surface Area | 200 acres |
| Drainage Area | 2,642 sq mi |
| Max Discharge | 41,200 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Navigation |
| Owner Type | Not Listed |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/29/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IL00008 |
| Federal ID | IL00008 |
| More Info | State Dam Safety Program |