Dam Report

Fairfield Water Works Dam No 1 dam

Iowa, USA Tr-Cedar Creek Hazard Significant
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Dam height
40ft
Hazard rating
Significant
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Fairfield Water Works Dam No 1 -- None dam
Fairfield Water Works Dam No 1 None · Tr-Cedar Creek
About this dam

Fairfield Water Works Dam No 1

Fairfield Water Works Dam No 1, located in Fairfield, Iowa, is a significant water supply structure built in 1888 on TR-Cedar Creek. The dam stands at a height of 40 feet and spans 500 feet, providing a storage capacity of 350 acre-feet. With a drainage area of 0.12 square miles, the dam plays a crucial role in maintaining a normal storage capacity of 292 acre-feet, ensuring a stable water supply for the local community.

Managed by the Local Government and regulated by the Iowa Department of Natural Resources, Fairfield Water Works Dam No 1 has been assessed as being in satisfactory condition as of May 2018. Although it has a significant hazard potential, the dam's risk assessment is moderate. With a regular inspection frequency of 5 years and emergency preparedness protocols in place, the dam serves as a vital infrastructure for water resource management in the region.

For water resource and climate enthusiasts, Fairfield Water Works Dam No 1 offers insights into the historical development of water supply infrastructure in Iowa. Its earth-type construction and uncontrolled spillway design present unique engineering challenges and opportunities for sustainable water management practices. As a key component of the local water supply system, the dam exemplifies the intersection of human ingenuity, environmental stewardship, and community resilience in the face of changing climate conditions.

StateNone
River / streamTr-Cedar Creek
NID IDIA01349
Owner typeLocal Government
Primary purposeWater Supply
Dam typeEarth
Year built1888
Dam height40 ft
Dam length500 ft
Max storage350 AF
Normal storage292 AF
Surface area24.0 ac
Drainage area0.1 sq mi
Hazard potentialSignificant
ConditionSatisfactory
Last inspectionMon, 14 May 2018 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 Fairfield Water Works Dam No 1 -- inflows here typically show up in storage 24-72 hours later.

Track Fairfield Water Works Dam No 1 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 Fairfield Water Works Dam No 1

Where does the data for Fairfield Water Works Dam No 1 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 Significant 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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