Dam Report

Frd No 11 dam

Kansas, USA N Fork Black Vermillion Riv-Tr Hazard High
Today high
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Tonight low
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Dam height
29ft
Hazard rating
High
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Frd No 11 -- None dam
Frd No 11 None · N Fork Black Vermillion Riv-Tr
About this dam

Frd No 11

Located in Vliets, Kansas, Frd No 11, also known as Upper Black Vermillion WS Dam 11, is a local government-owned earth dam designed by the USDA NRCS to primarily reduce flood risks along the North Fork Black Vermillion River. Completed in 1971, this dam stands at a height of 29 feet and has a storage capacity of 235 acre-feet. With a fair condition assessment and a high hazard potential, it is regulated and inspected by the Kansas Department of Agriculture.

The dam features an uncontrolled spillway with a width of 100 feet, serving a drainage area of 0.38 square miles. Despite its moderate risk assessment score of 3, Frd No 11 has no associated locks or outlet gates. The last inspection was conducted in April 2020, with a scheduled frequency of every 3 years. While it currently meets regulatory guidelines, there is no available information on the existence of an Emergency Action Plan or Inundation Maps for the dam.

For water resource and climate enthusiasts, Frd No 11 offers a fascinating case study in flood risk reduction infrastructure in the heart of Kansas. With its strategic location and design specifications, this dam plays a crucial role in mitigating potential hazards and safeguarding the surrounding area from the impacts of extreme weather events. As efforts continue to monitor and maintain the dam's integrity, it serves as a reminder of the vital role that sustainable water management practices play in enhancing community resilience in the face of a changing climate.

StateNone
River / streamN Fork Black Vermillion Riv-Tr
NID IDKS02365
Owner typeLocal Government
Primary purposeFlood Risk Reduction
Dam typeEarth
Year built1971
Dam height29 ft
Dam length965 ft
Max storage235 AF
Normal storage25 AF
Surface area6.4 ac
Drainage area0.4 sq mi
Hazard potentialHigh
ConditionFair
Last inspectionSun, 05 Apr 2020 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 Frd No 11 -- inflows here typically show up in storage 24-72 hours later.

Track Frd No 11 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 Frd No 11

Where does the data for Frd No 11 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.

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