Green Gate Farms Dam dam
Green Gate Farms Dam
Green Gate Farms Dam, located in St. Charles, Missouri, is a privately owned earth dam completed in 1994 with a height of 46 feet and a length of 2475 feet. The dam has a storage capacity of 575 acre-feet and serves a drainage area of 470 acres. With a spillway width of 50 feet and a maximum discharge of 2450 cubic feet per second, the dam is equipped with an uncontrolled spillway and has a high hazard potential.
Despite its high hazard potential, Green Gate Farms Dam has been assessed as satisfactory in condition and meets regulatory requirements for inspection and enforcement by the DAM AND RESERVOIR SAFETY PROG in Missouri. The dam is managed by private owners and has not been modified since its completion. Although the risk assessment indicates a moderate level of risk (3), there are no specific risk management measures or guidelines in place for emergency action planning or inundation mapping.
For water resource and climate enthusiasts, Green Gate Farms Dam presents an interesting case study in dam safety and management. With its private ownership and state-regulated status, the dam highlights the importance of regular inspections, risk assessments, and emergency preparedness in ensuring the safety and integrity of critical water infrastructure in the face of changing environmental conditions.
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 Green Gate Farms Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Bonhomme Creek Near Ellisville | 2 cfs | → |
| Dardenne Creek At Ofallon | 46 cfs | → |
| Bonhomme Creek Near Clarkson Valley | 6 cfs | → |
| Meramec River At Pacific | 1,250 cfs | → |
| Caulks Creek At Chesterfield | 23 cfs | → |
| Bourbeuse River At Union | 311 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Green Gate Farms Dam.
Boat launches
- Katy Trail 1800, Saint Charles County
- Downtown Washington
- Brittany Place 1, Lake Saint Louis
- Windjammer Point 200, Lake Saint Louis
- Scott A Lewis Lane Cottleville
- Stierberger Court Union
Campgrounds
- Klondike County Park
- Babler Memorial State Park
- Robertsville State Park
- St. Peters 370 Lakeside Park
- Camp Trinity
- Cuivre River State Park
Paddle runs
Track Green Gate Farms 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 Green Gate Farms Dam
Where does the data for Green Gate Farms 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 High 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 Green Gate Farms Dam.