Dam Report

Cypress Black Bayou Site 1 dam

Louisiana, USA Cypress Bayou Hazard High
Today high
--
Tonight low
--
Dam height
46ft
Hazard rating
High
Loading current conditions…
Loading next 24 hours…
Loading 7-day outlook…
Cypress Black Bayou Site 1 -- None dam
Cypress Black Bayou Site 1 None · Cypress Bayou
About this dam

Cypress Black Bayou Site 1

Cypress Black Bayou Site 1, also known as Cypress Bayou, is a local government-owned water resource located in Bossier City, Louisiana. Managed by the USDA NRCS, this site serves multiple purposes, including fish and wildlife pond, irrigation, and recreation. The primary dam type is earth, with a height of 46 feet and a hydraulic height of 30 feet, providing a normal storage capacity of 25,000 acre-feet.

Constructed in 1975, Cypress Black Bayou Site 1 spans 7,100 feet in length and covers a surface area of 3,100 acres, with a maximum storage capacity of 77,000 acre-feet. The dam's spillway type is uncontrolled, with a width of 300 feet, and it features vertical lift outlet gates. Despite its fair condition assessment as of September 2020, the site has a high hazard potential and moderate risk, as assessed by the state regulatory agency, LA DOTD.

Water resource and climate enthusiasts will find Cypress Black Bayou Site 1 to be an intriguing location for its ecological importance and recreational opportunities. With its significant storage capacity and diverse purposes, this site stands as a vital resource for the surrounding community, offering a glimpse into the intersection of water management, wildlife conservation, and public engagement in a dynamic environment like Cypress Bayou.

StateNone
River / streamCypress Bayou
NID IDLA00013
Owner typeLocal Government
Primary purposeFish And Wildlife Pond
Dam typeEarth
Year built1975
Dam height46 ft
Dam length7,100 ft
Max storage77,000 AF
Normal storage25,000 AF
Surface area3,100.0 ac
Drainage area155.0 sq mi
Hazard potentialHigh
ConditionFair
Last inspectionMon, 21 Sep 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.

Loading hourly forecast…
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
Loading detailed forecast…
Long-term outlook

15-day temperature & precipitation

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

Loading 15-day outlook…
Regional inflow

Nearby streamflow gauges

USGS streamgauges around Cypress Black Bayou Site 1 -- inflows here typically show up in storage 24-72 hours later.

Track Cypress Black Bayou Site 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 Cypress Black Bayou Site 1

Where does the data for Cypress Black Bayou Site 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 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.