Johnston Dam
Significant HazardNot Rated ConditionEmergency Action Plan: Not Required
Location
| State | Iowa |
| County | Jasper |
| Nearest City | LYNNVILLE |
| River/Stream | TR-TURNER CREEK |
| Coordinates | 41.69620, -92.80280 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 527 ft |
| Year Completed | 2005 (21 years old) |
Storage & Hydraulics
| NID Storage | 193 acre-ft |
| Max Storage | 193 acre-ft |
| Normal Storage | 81 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | James E Johnston |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |