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Round Valley Reservoir is a reservoir located in New Jersey. Its recorded surface area is approximately 2,350 acres. Nearby alternatives include Round Valley Reservoir, Spruce Run Reservoir, and Merrill Creek Reservoir. For this location, LakeRadar tracks an hourly and 7-day forecast, wind and gust outlook, and activity scores for boating, paddling, and swimming. Use the conditions and forecast on this page to decide when to go boating, fishing, or paddling at Round Valley Reservoir.
Updated
Latest source update is older than expected. Use caution and check the official source.
The last automated check (Oct 9, 1:15 AM EDT) found no active alerts for this lake, but that check is older than LakeRadar's alert freshness window, so the current alert status could not be confirmed.
Confirm before heading out: official alerts for this area or weather.gov/alerts. LakeRadar scores summarize available conditions and are not a substitute for official warnings, local rules, or on-water judgment.
Overall Excellent (90/100) across 5 activities. Best right now: Boating (96/100).
How the score is calculated →Best excellent fishing window, averaging 94/100 across these hours. Measured water temperature 66°F. Provisional data. Wind 5 mph from the northwest. Derived from the hourly forecast; official alerts are not forecast and are checked separately.
| Metric | 6a | 7a | 8a | 9a | 10a | 11a | 12p | 1p | 2p | 3p | 4p | 5p | 6p | 7p | 8p | 9p | 10p | 11p | 12a | 1a | 2a | 3a | 4a | 5a |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 50° | 49° | 48° | 48° | 47° | 47° | 48° | 52° | 58° | 62° | 65° | 66° | 68° | 68° | 68° | 68° | 65° | 61° | 60° | 55° | 54° | 52° | 51° | 50° |
| Wind (kts) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 9 | 9 | 9 | 13 | 9 | 9 | 9 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Direction | W | W | W | W | W | W | W | W | W | W | W | W | W | W | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW |
| Gusts (kts) | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 8 | 13 | 17 | 17 | 17 | 19 | 17 | 16 | 14 | 9 | 5 | 4 | 4 | 4 | 4 | 4 | 3 |
| Precip % | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% |
| Time | Temp | Wind | Gusts | Precip | Cloud | Condition |
|---|---|---|---|---|---|---|
| Fri, 2 AM EDT | 50°F | 5 mph W (270°) | 7 mph | 0% | 1% | Clear |
| Fri, 3 AM EDT | 49°F | 5 mph W (270°) | 7 mph | 0% | 1% | Clear |
| Fri, 4 AM EDT | 48°F | 5 mph W (270°) | 7 mph | 0% | 1% | Clear |
| Fri, 5 AM EDT | 48°F | 5 mph W (270°) | 7 mph | 0% | 3% | Clear |
| Fri, 6 AM EDT | 47°F | 5 mph W (270°) | 7 mph | 0% | 1% | Sunny |
| Fri, 7 AM EDT | 47°F | 5 mph W (270°) | 7 mph | 0% | 1% | Sunny |
| Fri, 8 AM EDT | 48°F | 5 mph W (270°) | 6 mph | 0% | 1% | Sunny |
| Fri, 9 AM EDT | 52°F | 5 mph W (270°) | 9 mph | 0% | 3% | Sunny |
| Fri, 10 AM EDT | 58°F | 5 mph W (270°) | 15 mph | 0% | 6% | Sunny |
| Fri, 11 AM EDT | 62°F | 10 mph W (270°) | 20 mph | 0% | 8% | Sunny |
| Fri, 12 PM EDT | 65°F | 10 mph W (270°) | 20 mph | 0% | 7% | Sunny |
| Fri, 1 PM EDT | 66°F | 10 mph W (270°) | 20 mph | 0% | 8% | Sunny |
| Fri, 2 PM EDT | 68°F | 15 mph W (270°) | 22 mph | 0% | 9% | Sunny |
| Fri, 3 PM EDT | 68°F | 10 mph W (270°) | 20 mph | 0% | 13% | Sunny |
| Fri, 4 PM EDT | 68°F | 10 mph NW (315°) | 18 mph | 0% | 8% | Sunny |
| Fri, 5 PM EDT | 68°F | 10 mph NW (315°) | 16 mph | 0% | 15% | Sunny |
| Fri, 6 PM EDT | 65°F | 5 mph NW (315°) | 10 mph | 0% | 11% | Mostly Clear |
| Fri, 7 PM EDT | 61°F | 5 mph NW (315°) | 6 mph | 0% | 13% | Mostly Clear |
| Fri, 8 PM EDT | 60°F | 5 mph NW (315°) | 5 mph | 0% | 35% | Partly Cloudy |
| Fri, 9 PM EDT | 55°F | 5 mph NW (315°) | 5 mph | 0% | 24% | Mostly Clear |
| Fri, 10 PM EDT | 54°F | 5 mph NW (315°) | 5 mph | 0% | 25% | Mostly Clear |
| Fri, 11 PM EDT | 52°F | 5 mph NW (315°) | 5 mph | 0% | 29% | Partly Cloudy |
| Sat, 12 AM EDT | 51°F | 5 mph NW (315°) | 5 mph | 0% | 28% | Partly Cloudy |
| Sat, 1 AM EDT | 50°F | 5 mph NW (315°) | 4 mph | 0% | 31% | Partly Cloudy |
| Sat, 2 AM EDT | 49°F | 5 mph NW (315°) | 4 mph | 0% | 33% | Partly Cloudy |
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 8, 2026 | This Afternoon October 8, 2026 | Tonight October 8, 2026 | Overnight October 9, 2026 | Friday October 9, 2026 | Friday Night October 9, 2026 | Saturday October 10, 2026 | Saturday Night October 10, 2026 | Sunday October 11, 2026 | Sunday Night October 11, 2026 | Columbus Day October 12, 2026 | Monday Night October 12, 2026 | Tuesday October 13, 2026 | Tuesday Night October 13, 2026 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 72° | 74° | 47° | 47° | 70° | 47° | 70° | 52° | 67° | 59° | 70° | 57° | 72° | 52° |
| Wind | W 5 to 15 mph | W 10 mph | W 5 to 10 mph | W 5 mph | W 5 to 15 mph | NW 5 mph | N 0 to 5 mph | 0 mph | SE 0 to 5 mph | E 0 to 5 mph | N 0 to 5 mph | 0 mph | W 0 to 5 mph | W 5 mph |
| Gusts | 30 mph | 25 mph | 18 mph | 7 mph | 22 mph | 10 mph | 5 mph | 2 mph | 17 mph | 16 mph | 6 mph | 4 mph | 9 mph | 8 mph |
| Precip % | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 3% | 65% | 91% | 76% | 6% | 18% | 19% |
| Forecast |
Spruce Run Reservoir at Clinton NJ · Oct 9, 4:45 AM UTC
Excellent for fishing (94/100), from 6 available inputs. Supporting this: Measured water temperature 65°F. Provisional data. Wind 5 mph from the west. Not available from a verified source for this lake: pressure trend. Confidence is moderate (73%) because some inputs are unavailable or older than ideal.
Excellent for boating (96/100), from 4 available inputs. Supporting this: Wind 5 mph from the west. Gusts to 10 mph. 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.
Good for sailing (83/100), from 4 available inputs. Supporting this: No active official alerts for this lake. Gusts exceed sustained wind by 5 mph, making the breeze puffy. Not available from a verified source for this lake: visibility. Confidence is high (88%).
Excellent for kayaking (95/100), from 5 available inputs. Supporting this: Wind 5 mph from the west. Gusts to 10 mph. Confidence is high (90%).
Surface water measured at 66°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.
Round Valley Reservoir is a premier freshwater reservoir in NJ, offering reliable water access and productive fishing throughout the spring, summer, and fall. The lake's surface character changes with shifting winds, offering glassy morning conditions for paddlers and active afternoon breezes for sailing. Public recreation is overseen by state and local natural resource agencies.
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 Yellow Perch, Rainbow Trout, Rock Bass, 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 9, 2:37 AM EDT