Dam Report

Wellington Nap C-23 dam

Missouri, USA Tr Missouri River Hazard High
Today high
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Tonight low
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Dam height
47ft
Hazard rating
High
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Wellington Nap C-23 -- None dam
Wellington Nap C-23 None · Tr Missouri River
About this dam

Wellington Nap C-23

Wellington Nap C-23, also known as Well-Nap C-23, is a local government-owned dam located in Lafayette County, Missouri. Designed by USDA NRCS and completed in 1970, this earth dam stands at a height of 47 feet and stretches 500 feet in length. With a normal storage capacity of 148 acre-feet and a maximum discharge of 327 cubic feet per second, this dam plays a crucial role in managing water resources in the area.

Situated on the TR Missouri River, Wellington Nap C-23 is regulated by the DAM AND RESERVOIR SAFETY PROG, ensuring that it meets state inspection, permitting, and enforcement requirements. Despite its satisfactory condition assessment as of December 2007, the dam carries a high hazard potential, necessitating a five-year inspection frequency. With a moderate risk assessment rating, measures for risk management are yet to be defined, highlighting the importance of ongoing monitoring and maintenance to ensure the safety and integrity of the structure for the surrounding community and environment.

Even though the dam has no associated locks or outlet gates, its uncontrolled spillway and stone core provide essential functions for flood control and water storage. Managed by the Natural Resources Conservation Service, Wellington Nap C-23 serves as a vital infrastructure piece in the region, contributing to water resource management and climate resilience efforts in Lafayette County, Missouri.

StateNone
River / streamTr Missouri River
NID IDMO10283
Owner typeLocal Government
Primary purposeOther
Dam typeEarth
Year built1970
Dam height47 ft
Dam length500 ft
Max storage200 AF
Normal storage148 AF
Surface area12.0 ac
Drainage area146.0 sq mi
Hazard potentialHigh
ConditionSatisfactory
Last inspectionTue, 19 Jul 2016 00:00:00 GMT

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.
Detailed forecast

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.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

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.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Regional inflow

Nearby streamflow gauges

USGS streamgauges around Wellington Nap C-23 -- inflows here typically show up in storage 24-72 hours later.

Track Wellington Nap C-23 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.

FAQ

About Wellington Nap C-23

Where does the data for Wellington Nap C-23 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.