Loch Leonard Dam dam
Loch Leonard Dam
Loch Leonard Dam, located in Cass County, Missouri, is a privately owned Earth dam that was completed in 1909. The dam stands at a height of 19 feet and has a storage capacity of 285 acre-feet, with a normal storage level of 142 acre-feet. The dam is situated on a tributary of Big Creek and serves a variety of purposes beyond flood control, making it a vital structure for water resource management in the area.
Despite its age, Loch Leonard Dam has not been subject to state regulation, inspection, or enforcement. The dam's hazard potential is considered high, although its condition has not been officially rated. The last inspection of the dam was conducted in 1979, highlighting the need for ongoing monitoring and maintenance to ensure its continued safety and effectiveness. The dam's emergency action plan status and risk management measures are currently unknown, underscoring the importance of proactive measures to address potential risks associated with the dam.
As a significant water resource in the region, Loch Leonard Dam plays a crucial role in managing water storage and flood control. With its historical significance and high hazard potential, continued attention and monitoring are essential to ensure the safety and reliability of this important infrastructure. Climate and water resource enthusiasts will find Loch Leonard Dam to be a fascinating case study in the challenges and opportunities of managing dams in a changing climate.
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 Loch Leonard Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| East Fork Little Blue River Nr Blue Springs | 10 cfs | → |
| Blue River At Blue Ridge Blvd Ext In Kc | 44 cfs | → |
| Blue R At Kenneth Rd | 35 cfs | → |
| Blue River At Kansas City | 113 cfs | → |
| Indian C At State Line Rd | 59 cfs | → |
| Tomahawk C Nr Overland Park | 7 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Loch Leonard Dam.
Boat launches
- South Lake Road Cass County
- Cass County
- Lee's Summit
- Southeast Raytown Road Lee's Summit
- East Loch Lloyd Parkway Loch Lloyd
- River Trail Kansas City
Track Loch Leonard 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 Loch Leonard Dam
Where does the data for Loch Leonard 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 Loch Leonard Dam.