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Round Valley Reservoir is a reservoir located in New Jersey. Fish documented in the area include Largemouth Bass, Rainbow Trout, Green Sunfish, and Bluegill. At around 2,350 acres (about 4 square miles), it is a mid-sized waterbody. Sitting at around 385 feet of elevation, it drops to a maximum depth near 180 feet. A nearby water gauge supplies level and temperature readings where available. Below you will find an hourly and 7-day forecast, wind and gust outlook, water readings, fishing conditions, and activity scores for boating, paddling, and swimming. Nearby alternatives include Round Valley Reservoir, Spruce Run Reservoir, and Merrill Creek Reservoir. Check the hourly forecast and activity outlook below before heading out to Round Valley Reservoir.
Updated
No active alerts for this lake as of the last check (Oct 11, 6:15 AM EDT). Alerts are re-checked automatically; see the official source for updates.
Best good fishing window, averaging 81/100 across these hours. Measured water temperature 65°F. Provisional data. Wind 5 mph from the east. Derived from the hourly forecast; official alerts are not forecast and are checked separately.
| Metric | 10a | 11a | 12p | 1p | 2p | 3p | 4p | 5p | 6p | 7p | 8p | 9p | 10p | 11p | 12a | 1a | 2a | 3a | 4a | 5a | 6a | 7a | 8a | 9a |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 55° | 56° | 57° | 58° | 60° | 61° | 61° | 62° | 62° | 62° | 62° | 61° | 61° | 61° | 61° | 61° | 60° | 61° | 60° | 60° | 59° | 59° | 58° | 58° |
| Wind (kts) | 4 | 4 | 4 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 13 | 9 | 9 | 9 | 9 | 4 | 4 | 4 | 4 | 4 | 9 | 4 |
| Direction | E | E | E | E | E | E | E | E | E | E | E | E | E | E | E | NE | NE | NE | NE | NE | NE | NE | N | N |
| Gusts (kts) | 9 | 10 | 12 | 15 | 17 | 18 | 19 | 20 | 21 | 21 | 22 | 22 | 22 | 20 | 17 | 16 | 14 | 12 | 11 | 12 | 12 | 12 | 12 | 13 |
| Precip % | 4% | 6% | 51% | 77% | 91% | 97% | 96% | 87% | 86% | 100% | 99% | 98% | 87% | 68% | 73% | 71% | 76% | 71% | 48% | 33% | 29% | 29% | 34% | 33% |
| Time | Temp | Wind | Gusts | Precip | Cloud | Condition |
|---|---|---|---|---|---|---|
| Sun, 6 AM EDT | 55°F | 5 mph E (90°) | 10 mph | 4% | 89% | Cloudy |
| Sun, 7 AM EDT | 56°F | 5 mph E (90°) | 12 mph | 6% | 86% | Mostly Cloudy |
| Sun, 8 AM EDT | 57°F | 5 mph E (90°) | 14 mph | 51% | 91% | Chance Rain |
| Sun, 9 AM EDT | 58°F | 10 mph E (90°) | 17 mph | 77% | 88% | Rain |
| Sun, 10 AM EDT | 60°F | 10 mph E (90°) | 20 mph | 91% | 94% | Rain |
| Sun, 11 AM EDT | 61°F | 10 mph E (90°) | 21 mph | 97% | 98% | Rain |
| Sun, 12 PM EDT | 61°F | 10 mph E (90°) | 22 mph | 96% | 98% | Rain |
| Sun, 1 PM EDT | 62°F | 10 mph E (90°) | 23 mph | 87% | 92% | Rain |
| Sun, 2 PM EDT | 62°F | 10 mph E (90°) | 24 mph | 86% | 91% | Rain |
| Sun, 3 PM EDT | 62°F | 10 mph E (90°) | 24 mph | 100% | 100% | Rain |
| Sun, 4 PM EDT | 62°F | 10 mph E (90°) | 25 mph | 99% | 100% | Rain |
| Sun, 5 PM EDT | 61°F | 10 mph E (90°) | 25 mph | 98% | 99% | Rain |
| Sun, 6 PM EDT | 61°F | 15 mph E (90°) | 25 mph | 87% | 93% | Rain |
| Sun, 7 PM EDT | 61°F | 10 mph E (90°) | 23 mph | 68% | 94% | Rain Likely |
| Sun, 8 PM EDT | 61°F | 10 mph E (90°) | 20 mph | 73% | 96% | Light Rain Likely |
| Sun, 9 PM EDT | 61°F | 10 mph NE (45°) | 18 mph | 71% | 91% | Light Rain Likely |
| Sun, 10 PM EDT | 60°F | 10 mph NE (45°) | 16 mph | 76% | 95% | Light Rain |
| Sun, 11 PM EDT | 61°F | 5 mph NE (45°) | 14 mph | 71% | 95% | Light Rain Likely |
| Mon, 12 AM EDT | 60°F | 5 mph NE (45°) | 13 mph | 48% | 89% | Chance Showers And Thunderstorms |
| Mon, 1 AM EDT | 60°F | 5 mph NE (45°) | 14 mph | 33% | 83% | Chance Showers And Thunderstorms |
| Mon, 2 AM EDT | 59°F | 5 mph NE (45°) | 14 mph | 29% | 84% | Chance Showers And Thunderstorms |
| Mon, 3 AM EDT | 59°F | 5 mph NE (45°) | 14 mph | 29% | 86% | Chance Showers And Thunderstorms |
| Mon, 4 AM EDT | 58°F | 10 mph N (0°) | 14 mph | 34% | 93% | Chance Showers And Thunderstorms |
| Mon, 5 AM EDT | 58°F | 5 mph N (0°) | 15 mph | 33% | 86% | Chance Showers And Thunderstorms |
| Mon, 6 AM EDT | 58°F | 5 mph N (0°) | 15 mph | 31% | 77% | Chance Showers And Thunderstorms |
Official National Weather Service hourly forecast. Showing 10 of 25 hours. Wind arrows point the way the wind is blowing; the compass point and degrees show where it comes from.
| Period | Today October 11, 2026 | Tonight October 11, 2026 | Columbus Day October 12, 2026 | Monday Night October 12, 2026 | Tuesday October 13, 2026 | Tuesday Night October 13, 2026 | Wednesday October 14, 2026 | Wednesday Night October 14, 2026 | Thursday October 15, 2026 | Thursday Night October 15, 2026 | Friday October 16, 2026 | Friday Night October 16, 2026 | Saturday October 17, 2026 | Saturday Night October 17, 2026 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 63° | 56° | 73° | 52° | 74° | 60° | 75° | 50° | 66° | 48° | 66° | 47° | 58° | 37° |
| Wind | E 5 to 10 mph | NE 5 to 15 mph | N 5 to 10 mph | NW 0 to 5 mph | SW 0 to 5 mph | SW 5 mph | W 5 mph | NW 5 mph | N 0 to 5 mph | 0 mph | S 0 to 5 mph | W 5 to 10 mph | NW 10 to 15 mph | NW 5 to 10 mph |
| Gusts | 25 mph | 25 mph | 17 mph | 12 mph | 13 mph | 13 mph | 17 mph | 14 mph | 14 mph | 7 mph | 20 mph | 27 mph | 29 mph | — |
| Precip % | 100% | 87% | 31% | 0% | 3% | 10% | 3% | 9% | 7% | 23% | 55% | 42% | 25% | 19% |
| Forecast |
Spruce Run Reservoir at Clinton NJ · Oct 11, 9:45 AM UTC
Fair for fishing (62/100), from 6 available inputs. Supporting this: Measured water temperature 65°F. Provisional data. Wind 5 mph from the northeast. The forecast mentions thunderstorms, which carries a risk penalty. Not available from a verified source for this lake: pressure trend. Confidence is high (85%).
Fair for boating (72/100), from 4 available inputs. Supporting this: Wind 5 mph from the northeast. Gusts to 7 mph. The forecast mentions thunderstorms, which carries a risk penalty. Not available from a verified source for this lake: visibility and conditions, verified water access. Confidence is moderate (84%) because some inputs are unavailable or older than ideal.
Fair for sailing (61/100), from 4 available inputs. Supporting this: Gusts are within 2 mph of sustained wind, so the breeze is steady. No active official alerts for this lake. The forecast mentions thunderstorms, which carries a risk penalty. Not available from a verified source for this lake: visibility. Confidence is high (88%).
Fair for kayaking (56/100), from 5 available inputs. Supporting this: Wind 5 mph from the northeast. Gusts to 7 mph. The forecast mentions thunderstorms, which carries a risk penalty. Combined air and water temperature is 117°F (below the 120°F safety guideline). Thermal protection recommended for paddle craft. Confidence is high (90%).
Surface water measured at 65°F. Air and water contrast evaluate recreational immersion comfort.
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Individual boat ramp GPS coordinates are maintained under the jurisdiction of NJ Parks & Wildlife Authority. Public boaters should verify seasonal launch water levels, gate hours, and daily vehicle/vessel fees before traveling.
Providing dependable water recreation for NJ residents and travelers, Round Valley Reservoir accommodates fishing boats, runabouts, and non-motorized craft. The waterbody plays an essential role in local watershed conservation and outdoor leisure. Responsible boating and clean-drain-dry practices keep the waters pristine for all.
Valid freshwater sport fishing license issued by New Jersey Division of Fish and Wildlife is required for anglers age 16+. Digital license on mobile is accepted.
Current motorized watercraft registration mandatory. Practice Clean, Drain & Dry protocols: drain all livewells and inspect props before launching. Life jackets required for all passengers.
Public shoreline and boating access managed by State & Local Authorities. Verify seasonal gate hours, launch fees, and parking rules before travel.
High-speed motorboating, pontoon cruising, wakeboarding, and water skiing across main channels. Target gamefish include Largemouth Bass, Rainbow Trout, Green Sunfish, Bluegill. Morning hours typically provide optimal glassy conditions for kayak and stand-up paddleboard (SUP) touring.
Warm water temperatures, peak swimming, active watersports, and open full-service campgrounds. Highest weekly attendance; plan early arrivals on summer weekends.
Spring pre-spawn and fall feeding transitions create prime trophy angling conditions. Cooler air, lower boat traffic, and vibrant seasonal shoreline foliage.
Mild year-round outdoor climate. Uncrowded waters, active winter bass and crappie fishing, and open year-round boat launch access.
No external source rows are cited by the data currently shown on this page.
Updated
Scores are heuristics, not safety guarantees. LakeRadar scores summarize available conditions and are not a substitute for official warnings, local rules, or on-water judgment.
All telemetry for Round Valley Reservoir is synchronized directly from authorized federal and state monitoring networks (USGS, NWS, NOAA, and state environmental authorities). Observations are strictly instrumented readings — unmonitored sensors are transparently disclosed rather than synthetic estimates.
Last source audit: Oct 11, 6:15 AM EDT