Cypress Bayou Reservoir Southeast of Benton
Bossier Parish County, Louisiana750 acresView mapDirections
This is the name LDEQ records for this water. It can describe one sampling location rather than the water as a whole.
LDEQ publishes the water-quality measurements for Cypress Bayou Reservoir Southeast of Benton. Here is what has been measured.
- Eutrophic
- Impaired · Taste, color, odor
- Limited data
Cypress Bayou Reservoir Southeast of Benton in Bossier Parish County, Louisiana has water-quality measurements published by LDEQ, shown here as reported. Phosphorus: 52 µg/L. Surface area: 750 acres.
Cypress Bayou Reservoir Southeast of Benton is a 750-acre productive, nutrient-rich eutrophic lake in Bossier Parish County, Louisiana. Public access is available with 1 public boat landing. Compared to the 1 other monitored lakes in Bossier Parish County, Cypress Bayou Reservoir Southeast of Benton ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2023-10-18. Methodology: how these readings are compared.
What Cypress Bayou Reservoir Southeast of Benton is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming conditions
Readings onlyLimited data
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Cypress Bayou Reservoir Southeast of Benton is listed impaired under Clean Water Act §303(d) (IR 5) for taste, color, odor. Check local advisories before you swim.
Whether Cypress Bayou Reservoir Southeast of Benton is safe to swim in today is a call for the Louisiana Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
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Water quality measurements for Cypress Bayou Reservoir Southeast of Benton
These are the measurements LDEQ publishes for Cypress Bayou Reservoir Southeast of Benton, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 52 µg/L. TSI 61.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 52µg/L | Fair GoodFairPoor |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 61 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Cypress Bayou Reservoir Southeast of Benton
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
750 acres
No bathymetric survey has been published for Cypress Bayou Reservoir Southeast of Benton, so its depth is not documented here.
Recreation & Access
- Cypress Lake DamSemi-private
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
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Fishing Cypress Bayou Reservoir Southeast of Benton
Reservoir Info (USACE NID)
Cypress Bayou Reservoir Southeast of Benton is a man-made reservoir impounded by the Cypress Black Bayou Site 2 (completed 1978), built primarily for irrigation on the Black Bayou; earth-type dam, 41 ft tall and 4,800 ft long.
- Surface area
- 750 ac
- Normal storage
- 6,600 ac-ft
- Max storage
- 18,000 ac-ft
- Drainage area
- 25.6 sq mi
- Hazard class
- High
- Owner
- Cypress Black Bayou Recreation and Water Conservation District
Source: USACE National Inventory of Dams, NID ID LA00347 · Operator website · Matched by proximity (0.48 km)
EPA Impairment Status
Cypress Bayou Reservoir Southeast of Benton is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Drinking water.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit LA100404_00 · Official waterbody report
Nearby Lakes in Bossier Parish County
Frequently asked questions about Cypress Bayou Reservoir Southeast of Benton
Where is Cypress Bayou Reservoir Southeast of Benton?
- Cypress Bayou Reservoir Southeast of Benton is in Bossier Parish County, Louisiana. This is the name LDEQ records for this water. It can describe one sampling location rather than the water as a whole. Its water-quality measurements are published by LDEQ and shown on this page as reported.
What is the water quality of Cypress Bayou Reservoir Southeast of Benton?
- Cypress Bayou Reservoir Southeast of Benton in Bossier Parish County, Louisiana has water-quality measurements published by LDEQ, shown here as reported. Phosphorus: 52 µg/L. Surface area: 750 acres.
Is Cypress Bayou Reservoir Southeast of Benton safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Cypress Bayou Reservoir Southeast of Benton is listed impaired under Clean Water Act §303(d) (IR 5) for taste, color, odor. Check local advisories before you swim.
Are there boat ramps on Cypress Bayou Reservoir Southeast of Benton?
- Cypress Bayou Reservoir Southeast of Benton has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Cypress Lake Dam.
Can I fish at Cypress Bayou Reservoir Southeast of Benton?
- Cypress Bayou Reservoir Southeast of Benton has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Louisiana's fish and wildlife agency, so check its current regulations before you go.
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Where this data comes from
34 measurements from 1 monitoring station, 2022–2023. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- LDEQ/Water Planning and Assessment (Louisiana)
LADEQWPD_WQX34 samples · 2022–2023
Analytical methods
- Total Phosphorus After Block Digestion
- 2130 B ~ Nephelometric Method
- 2120 B ~ Color in Water by Visual Comparison
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Named boat-access points from the USGS National Boat Ramps inventory