Knapp Dam dam
Knapp Dam
Knapp Dam, also known as Knapp Lake Dam, is a private structure located in Kingsville, Missouri, along the South Fork of the Blackwater River. This earth dam, with a height of 37 feet and a length of 450 feet, serves primarily for water supply purposes, with a storage capacity of 44 acre-feet and a surface area of 4 acres. The dam is regulated and inspected by the Missouri Dam and Reservoir Safety Program, ensuring that it meets state safety standards.
Despite its low hazard potential and satisfactory condition assessment, Knapp Dam has a regular inspection frequency of 5 years to uphold its safety and reliability. The last inspection was conducted in August 2011, with the most recent condition assessment taking place in March 2021. The dam features a spillway width of 60 feet and no outlet gates, emphasizing its design for water storage and supply. With its location in Johnson County, Missouri, Knapp Dam contributes to water resource management for the surrounding area.
Enthusiasts of water resources and climate may find Knapp Dam intriguing for its role in water supply management and its design as an earth dam with buttress core types. The dam's association with the South Fork of the Blackwater River highlights its importance in the local watershed, with a drainage area of 60 square miles. As a privately-owned structure with state regulation and enforcement, Knapp Dam showcases the collaboration between private owners and government agencies in ensuring the safety and functionality of critical water infrastructure in Missouri.
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 Knapp 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 | → |
| Big Creek Near Blairstown | 227 cfs | → |
| Little Blue River Near Lake City | 83 cfs | → |
| Blue River At Kansas City | 77 cfs | → |
| Blue River At Blue Ridge Blvd Ext In Kc | 29 cfs | → |
| South Grand River At Urich | 7 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Knapp Dam.
Boat launches
- South Lake Road Cass County
- Odessa Lake Road Lafayette County
- Cass County
- Lee's Summit
- Northwest 575th Road Johnson County
- Lafayette County
Track Knapp 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 Knapp Dam
Where does the data for Knapp 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 Low 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 Knapp Dam.