Morrison Wwtp Excess Flow Storage Pond Dam
Morrison Wwtp Excess Flow Storage Pond Dam is an earth dam located in Whiteside County, Illinois. It carries a Significant hazard potential classification.
About Morrison Wwtp Excess Flow Storage Pond Dam
Morrison Wwtp Excess Flow Storage Pond Dam is a dam in Whiteside, Illinois. The dam is owned by City Of Morrison (local government). It impounds the Trib Rock Cr near Morrison.
The dam stands 8 feet tall and stretches 250 feet across, and has a maximum storage capacity of 6 acre-feet.
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. An emergency action plan is in place for this dam. The most recent inspection on record was 07/02/2025.
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Location
| State | Illinois |
| County | Whiteside |
| Nearest City | Morrison |
| River/Stream | Trib Rock Cr |
| Coordinates | 41.79472, -89.96671 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 250 ft |
Storage & Hydraulics
| NID Storage | 6 acre-ft |
| Max Storage | 6 acre-ft |
| Spillway Type | None |
Ownership & Safety
| Purpose | Other |
| Owner | CITY OF MORRISON |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 07/02/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IL50681 |
| Federal ID | IL50681 |
| More Info | State Dam Safety Program |