William H. Harsha Lake Water Level
U.S. Army Corps of Engineers · Ohio
Latest reading Oct 26, 6:00 AM · elevation
William H. Harsha Lake is 2.6 ft below full pool today (730.43 ft vs 733.00 ft). It is 94% full. It has fallen 0.02 ft since yesterday and is down 0.29 ft over 7 days.
Water level chart
ft above sea levelFull pool (733.0 ft) is 2.6 ft above the latest reading, off this chart
Reading
William H. Harsha Lake fishing report & conditions
updated Oct 26, 6:49 PM ETLake 2.6 ft below full pool and steady, calm wind — good fall fishing day (6/10), best window 8:05 AM–9:05 AM (moonset near sunrise).
Lake 2.6 ft below full pool and steady, calm wind — fair fall fishing day (5/10), best window 6:56 PM–7:56 PM (moonrise near sunset).
- Water temp—no water-temperature sensor on this water yet
- Air temphigh 74°F / low 46°FAreas Of Fog then Mostly Sunny
- WindCalm0–4 mph 6 AM–6 PM, gusts to 7
- Level2.6 ft below full poolLevel steady (−0.02 ft in 24 h)
Official Ohio fishing report: Ohio Department of Natural Resources, Division of Wildlife — Fishing reports and forecasts
Best fishing times today
Today is a good fishing day (solunar + local conditions)
6/10
Full moon · 99% lit · New moon Mon, Nov 9 · Sunrise 7:57 AM · Sunset 6:42 PM
Major fishing times
- Moon overhead12:16 AM–2:16 AM
- Moon underfoot12:44 PM–2:44 PM
Minor fishing times
- Moonset8:05 AM–9:05 AMSunrise
- Moonrise6:15 PM–7:15 PMSunset
Fishing times for the next 7 days
| TodayOct 26 | 6/10Good | Major 12:16 AM–2:16 AM · 12:44 PM–2:44 PM Minor 8:05 AM–9:05 AM · 6:15 PM–7:15 PM Calm wind 0–4 mph |
|---|---|---|
| TueOct 27 | 4/10Fair | Major 1:12 AM–3:12 AM · 1:42 PM–3:42 PM Minor 9:22 AM–10:22 AM · 6:56 PM–7:56 PM Calm wind 0–2 mph |
| WedOct 28 | 2/10Poor | Major 2:13 AM–4:13 AM · 2:45 PM–4:45 PM Minor 10:38 AM–11:38 AM · 7:49 PM–8:49 PM Calm wind 1–4 mph |
| ThuOct 29 | 5/10Fair | Major 3:17 AM–5:17 AM · 3:49 PM–5:49 PM Minor 11:48 AM–12:48 PM · 8:51 PM–9:51 PM Light wind 1–7 mph |
| FriOct 30 | 3/10Poor | Major 4:22 AM–6:22 AM · 4:53 PM–6:53 PM Minor 12:48 PM–1:48 PM · 10:02 PM–11:02 PM Calm wind 0–2 mph |
| SatOct 31 | 4/10Fair | Major 5:24 AM–7:24 AM · 5:53 PM–7:53 PM Minor 1:36 PM–2:36 PM · 11:17 PM–12:17 AM Calm wind 2–5 mph |
| SunNov 1 | 5/10Fair | Major 5:21 AM–7:21 AM · 5:48 PM–7:48 PM Minor 1:14 PM–2:14 PM · 11:31 PM–12:31 AM Light wind 4–6 mph |
How this rating works
Solunar theory says fish feed more when the moon is overhead or underfoot (major periods, about 2 hours) and around moonrise and moonset (minor periods, about 1 hour). On a lake or river there is no tide, so instead of tide changes we score the local conditions anglers watch: the barometric pressure trend, the wind, whether the lake level is steady, and the water temperature where it is measured.
| Base | every day starts at 1 | 1 |
|---|---|---|
| Sunrise / sunset | a period overlaps sunrise or sunset ±1 h: major +2, minor +1 (max 3) (Moonset × sunrise +1; Moonrise × sunset +1) | 2 |
| Moon phase | within 2 days of a new or full moon +2, within 4 days +1 (today: 0.5 days) | 2 |
| Local conditions | pressure 6 AM→6 PM: falling +2, steady or slowly rising +1, rising fast 0 · daytime wind 4–15 mph +1, over 20 mph (or gusts over 30) −1 · level within ±0.25 ft in 24 h +1 · water 55–75°F +1, below 45°F or above 85°F −1 (0 to 4 in total)
| 1 |
| Today | 6, rounded | 6/10 |
1–3 poor · 4–5 fair · 6–7 good · 8–10 excellent. Pressure and wind are the NOAA National Weather Service hourly forecast for this spot; the level/flow trend is the latest 24 hours of readings on this page. Days 2–7 score sun, moon, forecast pressure and forecast wind only (level and water temperature aren’t forecast). Solunar times are a rule of thumb, not a guarantee.
Solunar periods calculated for 39.02, -84.15 (moon times from astronomical equations, William H. Harsha Lake local time).
Best fishing times today
Today is a fair fishing day (solunar + local conditions)
5/10
Waning gibbous · 97% lit · New moon Mon, Nov 9 · Sunrise 7:58 AM · Sunset 6:41 PM
Major fishing times
- Moon overhead1:12 AM–3:12 AM
- Moon underfoot1:42 PM–3:42 PM
Minor fishing times
- Moonset9:22 AM–10:22 AM
- Moonrise6:56 PM–7:56 PMSunset
Fishing times for the next 7 days
| TodayOct 27 | 5/10Fair | Major 1:12 AM–3:12 AM · 1:42 PM–3:42 PM Minor 9:22 AM–10:22 AM · 6:56 PM–7:56 PM Calm wind 0–2 mph |
|---|---|---|
| WedOct 28 | 2/10Poor | Major 2:13 AM–4:13 AM · 2:45 PM–4:45 PM Minor 10:38 AM–11:38 AM · 7:49 PM–8:49 PM Calm wind 1–4 mph |
| ThuOct 29 | 5/10Fair | Major 3:17 AM–5:17 AM · 3:49 PM–5:49 PM Minor 11:48 AM–12:48 PM · 8:51 PM–9:51 PM Light wind 1–7 mph |
| FriOct 30 | 3/10Poor | Major 4:22 AM–6:22 AM · 4:53 PM–6:53 PM Minor 12:48 PM–1:48 PM · 10:02 PM–11:02 PM Calm wind 0–2 mph |
| SatOct 31 | 4/10Fair | Major 5:24 AM–7:24 AM · 5:53 PM–7:53 PM Minor 1:36 PM–2:36 PM · 11:17 PM–12:17 AM Calm wind 2–5 mph |
| SunNov 1 | 5/10Fair | Major 5:21 AM–7:21 AM · 5:48 PM–7:48 PM Minor 1:14 PM–2:14 PM · 11:31 PM–12:31 AM Light wind 4–6 mph |
| MonNov 2 | 4/10Fair | Major 6:14 AM–8:14 AM · 6:39 PM–8:39 PM Minor 1:46 PM–2:46 PM Light wind 4–7 mph |
How this rating works
Solunar theory says fish feed more when the moon is overhead or underfoot (major periods, about 2 hours) and around moonrise and moonset (minor periods, about 1 hour). On a lake or river there is no tide, so instead of tide changes we score the local conditions anglers watch: the barometric pressure trend, the wind, whether the lake level is steady, and the water temperature where it is measured.
| Base | every day starts at 1 | 1 |
|---|---|---|
| Sunrise / sunset | a period overlaps sunrise or sunset ±1 h: major +2, minor +1 (max 3) (Moonrise × sunset +1) | 1 |
| Moon phase | within 2 days of a new or full moon +2, within 4 days +1 (today: 1.5 days) | 2 |
| Local conditions | pressure 6 AM→6 PM: falling +2, steady or slowly rising +1, rising fast 0 · daytime wind 4–15 mph +1, over 20 mph (or gusts over 30) −1 · level within ±0.25 ft in 24 h +1 · water 55–75°F +1, below 45°F or above 85°F −1 (0 to 4 in total)
| 1 |
| Today | 5, rounded | 5/10 |
1–3 poor · 4–5 fair · 6–7 good · 8–10 excellent. Pressure and wind are the NOAA National Weather Service hourly forecast for this spot; the level/flow trend is the latest 24 hours of readings on this page. Days 2–7 score sun, moon, forecast pressure and forecast wind only (level and water temperature aren’t forecast). Solunar times are a rule of thumb, not a guarantee.
Solunar periods calculated for 39.02, -84.15 (moon times from astronomical equations, William H. Harsha Lake local time).
Weather & wind at William H. Harsha Lake
air temperature, not water3-day forecast
- Tonight46°Partly Cloudy then Areas Of FogWind 0 mphRain 1%
- Tuesday74° / 51°Areas Of Fog then Mostly SunnyWind SE 2 mphRain 1%
- Wednesday74° / 47°Partly SunnyWind S 3 mphRain 0%
NOAA National Weather Service forecast for 39.022, -84.151 (grid ILN), issued Oct 26, 4:00 PM local time. High / low are air temperatures; water temperature is in the fishing section above. The “Air temp & weather” tile at the top refreshes live.
Last 10 days
| Date | Level (ft) | Change |
|---|---|---|
| Mon Oct 26 (today) | 730.43 | −0.02 |
| Sun Oct 25 | 730.45 | −7.02 |
| Wed Sep 23 | 737.47 | −2.31 |
| Tue Sep 22 | 739.78 | +6.77 |
| Tue Sep 15 | 733.01 | −1.80 |
| Mon Sep 14 | 734.81 | +1.89 |
| Wed Sep 2 | 732.92 | −0.03 |
| Tue Sep 1 | 732.95 | −0.03 |
| Mon Aug 31 | 732.98 | −0.76 |
| Thu Jul 16 | 733.74 | −0.19 |
Daily mean of all readings that day; today is the average so far.
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Nearby lakes & rivers
- East Fork Lake0 mi · Lake · Bantam730.40 ft24h −0.03 ft
- Ohio River at Cincinnati20 mi · River27,300 cfsstage 26.48 ft
- West Fork of Mill Creek Lake25 mi · Lake · Greenhills675.16 ft+0.16 ft vs full pool
- Caesar Creek Lake33 mi · Lake847.15 ft−1.85 ft vs full pool
- Paint Creek Lake45 mi · Lake794.18 ft+0.61 ft vs normal pool
- Brookville Lake54 mi · Lake · Brookville746.28 ft−1.72 ft vs full pool
Guides
All guides →About this data
- Source
- U.S. Army Corps of Engineers
- Location
- 39.0221, -84.1507 · Ohio
- Measures
- Reservoir water-surface elevation, feet above sea level (NGVD29)
- Latest reading
- Oct 26, 6:00 AM local time
- History
- 36 days on file since 2025-09-23
- Page built
- Oct 26, 2026 6:49 PM ET
- Full pool
- 733.00 ft — U.S. Army Corps of Engineers (Top of Conservation)
- Storage
- 85,055 of 90,400 acre-ft (Top of Conservation)
Source: U.S. Army Corps of Engineers (official page). Operator data is preliminary and may be revised. Weather: NOAA National Weather Service.