Round Valley Intake Pond
Round Valley Intake Pond in Hunterdon County, New Jersey is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 7 acres.
- Area
- 7 acres
Why Round Valley Intake Pond has no grade
We grade a lake only when its monitoring record clears the evidence bar: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Round Valley Intake Pond, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by your state environmental agency and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
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. Grade methodology: LakeGrade methodology.
Watch Round Valley Intake Pond water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedBacteria advisory
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Round Valley Intake Pond
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples |
Where to stay near Round Valley Intake Pond
Compare lakeside cabins, hotels, and vacation rentals near Round Valley Intake Pond in Hunterdon County, New Jersey — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Round Valley Intake Pond
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 7 acres |
No bathymetric survey has been published for Round Valley Intake Pond, so its depth is not documented here.
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
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NJ02030105020080-01 · Official waterbody report · Matched by proximity (1.67 km)
Graded lakes near Round Valley Intake Pond
Round Valley Intake Pond has no grade, but these lakes within a short drive do.
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. LakeQuality has not rated this lake (UNRATED) — there is not enough recent sampling to assign a letter.
What is the water quality grade for Round Valley Intake Pond?
- Round Valley Intake Pond in Hunterdon County, New Jersey is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 7 acres.
Is Round Valley Intake Pond safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Round Valley Intake Pond is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Round Valley Intake Pond across LakeGrade
More New Jersey Lake Rankings
Other Lakes in New Jersey
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)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database