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C.J. Brown Reservoir is one of the reservoirs LakeRadar tracks in Ohio. Its recorded surface area is approximately 2,120 acres. Fish documented in the area include White Crappie, Green Sunfish, Bluegill, and Channel Catfish. Coverage here includes an hourly and 7-day forecast, wind and gust outlook, fishing conditions, and activity scores for boating, paddling, and swimming. If you are planning a trip, Grand Lake St. Marys, Caesar Creek Lake, and Indian Lake are also nearby. This page combines the live forecast, wind, and conditions for C.J. Brown Reservoir so you can plan a visit.
Updated
Latest source update is older than expected. Use caution and check the official source.
The last automated check (Oct 9, 1:10 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 Good (86/100) across 5 activities. Best right now: Boating (98/100).
How the score is calculated →Best excellent fishing window, averaging 95/100 across these hours. Wind 3 mph from the southeast. Dusk hours (19:00 local). 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) | 51° | 50° | 49° | 48° | 47° | 47° | 47° | 54° | 60° | 65° | 69° | 72° | 74° | 75° | 75° | 76° | 74° | 71° | 67° | 62° | 61° | 60° | 59° | 58° |
| Wind (kts) | 0 | 0 | 0 | 1 | 1 | 1 | 2 | 3 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 5 | 5 | 5 | 4 |
| Direction | — | — | — | E | E | E | E | E | SE | SE | S | S | S | S | S | S | S | SE | SE | SE | SE | SE | SE | SE |
| Gusts (kts) | 4 | 4 | 4 | 4 | 5 | 6 | 6 | 7 | 6 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 8 | 10 | 11 | 12 | 13 | 13 | 13 |
| Precip % | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 1% | 1% | 1% | 1% | 1% | 1% | 2% | 2% | 2% | 2% | 2% | 2% | 2% | 2% | 2% | 2% | 2% |
| Time | Temp | Wind | Gusts | Precip | Cloud | Condition |
|---|---|---|---|---|---|---|
| Fri, 2 AM EDT | 51°F | Calm | 5 mph | 0% | 3% | Clear |
| Fri, 3 AM EDT | 50°F | Calm | 5 mph | 0% | 1% | Clear |
| Fri, 4 AM EDT | 49°F | Calm | 5 mph | 0% | 2% | Clear |
| Fri, 5 AM EDT | 48°F | 1 mph E (90°) | 5 mph | 0% | 2% | Clear |
| Fri, 6 AM EDT | 47°F | 1 mph E (90°) | 6 mph | 0% | 1% | Sunny |
| Fri, 7 AM EDT | 47°F | 1 mph E (90°) | 7 mph | 0% | 13% | Sunny |
| Fri, 8 AM EDT | 47°F | 2 mph E (90°) | 7 mph | 0% | 7% | Sunny |
| Fri, 9 AM EDT | 54°F | 3 mph E (90°) | 8 mph | 1% | 3% | Sunny |
| Fri, 10 AM EDT | 60°F | 2 mph SE (135°) | 7 mph | 1% | 0% | Sunny |
| Fri, 11 AM EDT | 65°F | 3 mph SE (135°) | 8 mph | 1% | 1% | Sunny |
| Fri, 12 PM EDT | 69°F | 3 mph S (180°) | 8 mph | 1% | 1% | Sunny |
| Fri, 1 PM EDT | 72°F | 3 mph S (180°) | 8 mph | 1% | 10% | Sunny |
| Fri, 2 PM EDT | 74°F | 3 mph S (180°) | 8 mph | 1% | 26% | Mostly Sunny |
| Fri, 3 PM EDT | 75°F | 3 mph S (180°) | 7 mph | 2% | 16% | Sunny |
| Fri, 4 PM EDT | 75°F | 3 mph S (180°) | 7 mph | 2% | 32% | Mostly Sunny |
| Fri, 5 PM EDT | 76°F | 3 mph S (180°) | 7 mph | 2% | 33% | Mostly Sunny |
| Fri, 6 PM EDT | 74°F | 3 mph S (180°) | 7 mph | 2% | 38% | Partly Cloudy |
| Fri, 7 PM EDT | 71°F | 3 mph SE (135°) | 9 mph | 2% | 47% | Partly Cloudy |
| Fri, 8 PM EDT | 67°F | 5 mph SE (135°) | 12 mph | 2% | 52% | Mostly Cloudy |
| Fri, 9 PM EDT | 62°F | 5 mph SE (135°) | 13 mph | 2% | 56% | Mostly Cloudy |
| Fri, 10 PM EDT | 61°F | 6 mph SE (135°) | 14 mph | 2% | 72% | Mostly Cloudy |
| Fri, 11 PM EDT | 60°F | 6 mph SE (135°) | 15 mph | 2% | 81% | Mostly Cloudy |
| Sat, 12 AM EDT | 59°F | 6 mph SE (135°) | 15 mph | 2% | 70% | Mostly Cloudy |
| Sat, 1 AM EDT | 58°F | 5 mph SE (135°) | 15 mph | 2% | 53% | Mostly Cloudy |
| Sat, 2 AM EDT | 57°F | 5 mph SE (135°) | 14 mph | 1% | 66% | Mostly 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 | Today 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) | 73° | 73° | 47° | 47° | 77° | 55° | 75° | 56° | 72° | 57° | 76° | 59° | 77° | 51° |
| Wind | W 3 to 13 mph | NW 5 to 13 mph | N 0 to 9 mph | NE 1 mph | SE 3 mph | SE 6 mph | SE 6 to 13 mph | SE 14 mph | E 6 to 14 mph | NW 6 mph | W 3 to 7 mph | SW 5 to 9 mph | W 13 mph | N 6 to 12 mph |
| Gusts | 20 mph | 20 mph | 14 mph | 5 mph | 8 mph | 15 mph | 27 mph | 31 mph | 30 mph | 14 mph | 13 mph | 14 mph | 18 mph | 16 mph |
| Precip % | 0% | 0% | 1% | 0% | 2% | 2% | 1% | 95% | 95% | 54% | 0% | 13% | 23% | 14% |
| Forecast |
Nearby river temperature: 66.0°F at Buck Creek bl CJ Brown Reservoir nr Springfield OH (1.6 mi away) · Oct 9, 6:00 AM UTC
Excellent for fishing (92/100), from 6 available inputs. Supporting this: Measured water temperature 66°F from a representative gauge 1.6 mi away. Provisional data. Wind 3 mph from the west. Not available from a verified source for this lake: pressure trend. Confidence is moderate (72%) because some inputs are unavailable or older than ideal.
Excellent for boating (98/100), from 4 available inputs. Supporting this: Wind 3 mph from the west. Gusts to 8 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.
Fair for sailing (72/100), 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%).
Good for kayaking (81/100), from 5 available inputs. Supporting this: Wind 3 mph from the west. Gusts to 8 mph. Combined air and water temperature is 116°F (below the 120°F safety guideline). Thermal protection recommended for paddle craft. Confidence is high (90%).
No verified water temperature source exists for this lake, so a swimming comfort score is not shown.
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Individual boat ramp GPS coordinates are maintained under the jurisdiction of OH Parks & Wildlife Authority. Public boaters should verify seasonal launch water levels, gate hours, and daily vehicle/vessel fees before traveling.
C.J. Brown Reservoir is an important freshwater reservoir in OH, known for its dependable sport fishery, open cruising lanes, and scenic shoreline. Recreational boaters and anglers share its waters alongside migrating waterfowl and native wildlife. Public facilities and natural resource management are overseen by state and local natural resource agencies.
Valid freshwater sport fishing license issued by Ohio Division of Wildlife (ODNR) 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 White Crappie, Green Sunfish, Bluegill, Channel Catfish. 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 C.J. Brown 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, 2:40 AM EDT