Dam Report

Walker Dam dam

Iowa, USA Trib To E. Nishnabotna Hazard Low
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Dam height
30ft
Hazard rating
Low
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Walker Dam -- None dam
Walker Dam None · Trib To E. Nishnabotna
About this dam

Walker Dam

Walker Dam, located in Montgomery County, Iowa, serves as a crucial structure for grade stabilization along a tributary to the East Nishnabotna River. Built in 2005 by the USDA NRCS, this private-owned earth dam stands at 30 feet high and stretches 450 feet in length, with a storage capacity of 32 acre-feet. Its primary purpose is to prevent erosion and protect the surrounding area, making it an essential component for fire protection, stock, or small fish pond creation.

Despite its low hazard potential, Walker Dam plays a significant role in managing the local water resources and enhancing environmental sustainability. With a normal storage capacity of 17 acre-feet and a maximum discharge rate of 130 cubic feet per second, the dam ensures efficient water retention and flow regulation. While its current condition assessment is not rated, the dam's presence is a testament to responsible water resource management and climate resilience in the region.

As a key part of the local infrastructure, Walker Dam contributes to the overall water management efforts in Iowa, particularly in the prevention of soil erosion and enhancing the ecological balance of the area. With its strategic location and design features, including a stone core and soil foundation, the dam stands as a testament to effective grade stabilization and water conservation practices. Its construction and operation reflect a commitment to sustainability and environmental protection, making it a valuable asset for water resource and climate enthusiasts alike.

StateNone
River / streamTrib To E. Nishnabotna
NID IDIA04060
Owner typePrivate
Primary purposeGrade Stabilization
Dam typeEarth
Year built2005
Dam height30 ft
Dam length450 ft
Max storage32 AF
Normal storage17 AF
Surface area3.0 ac
Drainage area0.1 sq mi
Hazard potentialLow
ConditionNot Rated

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 Walker Dam -- inflows here typically show up in storage 24-72 hours later.

Track Walker 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.

FAQ

About Walker Dam

Where does the data for Walker 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.

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