Greenfield Mills Dam dam
Greenfield Mills Dam
Greenfield Mills Dam, also known as Greenfield Reservoir Dam, is a privately owned structure located in LaGrange, Indiana. Completed in 1835, this earth dam stands at a height of 27 feet and spans a length of 410 feet along the Fawn River. With a storage capacity of 275 acre-feet and a drainage area of 97 square miles, the dam has a significant hazard potential and a poor condition assessment as of its last inspection in April 2018.
Despite lacking a spillway, the dam has a maximum discharge of 2700 cubic feet per second and covers a surface area of 13.13 acres. While it is state-regulated and inspected, with enforcement measures in place, the risk assessment for Greenfield Mills Dam is considered high, with a risk management plan yet to be detailed. This historical structure remains a focal point for water resource and climate enthusiasts, serving as a reminder of the delicate balance between water management and environmental preservation in the region.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Greenfield Mills Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Pigeon Creek Nr Angola | 90 cfs | → |
| Prairie River Near Nottawa | 114 cfs | → |
| Pigeon River Near Scott | 326 cfs | → |
| Fish Creek At Hamilton | 19 cfs | → |
| Nb Elkhart River At Cosperville | 153 cfs | → |
| South Branch Hog Creek Near Allen | 42 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Greenfield Mills Dam.
Boat launches
- Gilead Lake Boat Launch
- East Fawn River Road 29783, Fawn River
- Ln 340 Jimmerson Lake 500-540, Angola
- Lake George, 565 Acres, Branch County
- Lane 385 Big Otter Lake Steuben County
- Pleasant View Drive 499, Ovid Township
Campgrounds
- Pigeon River State Fish And Wildlife Area
- Cade Lake County Park
- Pokagon State Park
- Steuben County Park
- Memorial Park Campground - Coldwater
- Nottawa Park
Fishing spots
Track Greenfield Mills Dam in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Greenfield Mills Dam
Where does the data for Greenfield Mills Dam come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Significant hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Greenfield Mills Dam.