Morrison Rockwood Siltation Pond Dam
Low HazardNot Available ConditionEmergency Action Plan: No
Location
| State | Illinois |
| County | Whiteside |
| Nearest City | MORRISON |
| River/Stream | TRIB ROCK CREEK |
| Coordinates | 41.84695, -89.97312 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 29 ft |
| Dam Length | 410 ft |
| Year Completed | 1981 (45 years old) |
Storage & Hydraulics
| NID Storage | 140 acre-ft |
| Max Storage | 140 acre-ft |
| Normal Storage | 90 acre-ft |
| Max Discharge | 2,080 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | ILLINOIS DEPARTMENT OF NATURAL RESOURCES |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 10/22/2025 |
| Emergency Action Plan | No |