Lylah Marsh Dam
Low HazardNot Rated ConditionEmergency Action Plan: Not Required
Location
| State | Iowa |
| County | Howard |
| Nearest City | ELMA |
| River/Stream | LITTLE WAPSIPINICON RIVER |
| Coordinates | 43.28460, -92.47010 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 932 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 358 acre-ft |
| Max Storage | 358 acre-ft |
| Normal Storage | 158 acre-ft |
| Surface Area | 52 acres |
| Drainage Area | 21 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Howard County Conservation Board |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 12/30/1965 |
| Emergency Action Plan | Not Required |