Round Valley Intake Pond
Hunterdon County, New Jersey7 acresView mapDirections
No nutrient or algae sampling on record from NJDEP for this lake.
- Impaired · Nutrients (phosphorus, nitrogen)
- Limited data
Round Valley Intake Pond in Hunterdon County, New Jersey has water-quality measurements published by NJDEP, shown here as reported. Surface area: 7 acres.
Round Valley Intake Pond is a 7-acre lake in Hunterdon County, New Jersey.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2023-12-21. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Round Valley Intake Pond is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen), pH / acidity, temperature, turbidity. Check local advisories before you swim.
Whether Round Valley Intake Pond is safe to swim in today is a call for the New Jersey Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Round Valley Intake Pond
These are the measurements NJDEP publishes for Round Valley Intake Pond, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data.
Ask about Round Valley Intake Pond
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
7 acres
No bathymetric survey has been published for Round Valley Intake Pond, so its depth is not documented here.
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Fishing Round Valley Intake Pond
Reservoir Info (USACE NID)
Round Valley Intake Pond is a man-made reservoir impounded by the New Jersey No Name #31 Dam, built primarily for other on the Cramers Creek; earth-type dam, 23 ft tall and 550 ft long.
- Surface area
- 7 ac
- Normal storage
- 40 ac-ft
- Drainage area
- 2.3 sq mi
- Hazard class
- High
- Owner
- New Jersey Water Supply Authority
Source: USACE National Inventory of Dams, NID ID NJ00519 · Operator website · Matched by proximity (0.27 km)
EPA Impairment Status
Round Valley Intake Pond is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NJ02030105020070-01 · Official waterbody report
Nearby Lakes in Hunterdon County
Frequently asked questions about Round Valley Intake Pond
Where is Round Valley Intake Pond?
- Round Valley Intake Pond is a lake in Hunterdon County, New Jersey. Its water-quality measurements are published by NJDEP and shown on this page as reported.
What is the water quality of Round Valley Intake Pond?
- Round Valley Intake Pond in Hunterdon County, New Jersey has water-quality measurements published by NJDEP, shown here as reported. Surface area: 7 acres.
Is Round Valley Intake Pond safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Round Valley Intake Pond is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen), pH / acidity, temperature, turbidity. Check local advisories before you swim.
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Where this data comes from
20 measurements from 1 monitoring station, 2023. Retrieved from the EPA Water Quality Portal on 2026-08-21.
Collected and reported by
- NJDEP Bureau of Freshwater and Biological Monitoring
NJDEP_BFBM20 samples · 2023
Analytical methods
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
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