So Fork Blackwater Wtrshd Site E-29 dam
So Fork Blackwater Wtrshd Site E-29
So Fork Blackwater Watershed Site E-29 is a local government-owned flood risk reduction structure located in Holden, Missouri. Constructed in 1980, this earth dam stands at a height of 27 feet and has a length of 1000 feet, with a storage capacity of 1954 acre-feet. Situated on E Pin Oak Creek in Johnson County, this structure helps mitigate flood risks for the surrounding area by providing storage for excess water during heavy rainfall events.
With a low hazard potential and a current condition assessment of "Not Rated," this dam serves as a crucial piece of infrastructure in the region's water resource management system. Despite not being state regulated or inspected, the dam's construction and operation fall under the jurisdiction of the Kansas City District of the US Army Corps of Engineers. With a drainage area of 774 square miles and a maximum discharge capacity of 4813 cubic feet per second, this structure plays a vital role in protecting downstream communities from the impacts of flooding.
Although the dam has not been assessed for emergency action planning or risk assessment, its strategic location and design make it an essential component in the overall flood risk reduction strategy for the region. The site's proximity to the South Fork Blackwater River and its capacity to store water during high-flow events make it a valuable asset for safeguarding both local communities and the surrounding ecosystem from the impacts of extreme weather events and climate variability.
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 So Fork Blackwater Wtrshd Site E-29 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Big Creek Near Blairstown | 215 cfs | → |
| South Grand River At Urich | 4 cfs | → |
| South Grand River At Archie | 44 cfs | → |
| East Fork Little Blue River Nr Blue Springs | 10 cfs | → |
| Little Blue River Near Lake City | 76 cfs | → |
| Blue River At Blue Ridge Blvd Ext In Kc | 26 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near So Fork Blackwater Wtrshd Site E-29.
Boat launches
- Northwest 575th Road Johnson County
- Mo K Henry County
- South Lake Road Cass County
- Cass County
- Odessa Lake Road Lafayette County
- Lee's Summit
Track So Fork Blackwater Wtrshd Site E-29 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 So Fork Blackwater Wtrshd Site E-29
Where does the data for So Fork Blackwater Wtrshd Site E-29 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 So Fork Blackwater Wtrshd Site E-29.