Lake Tappan Water Level
USGS gauge 01376950 · at Old Tappan, NJ
Latest reading Oct 26, 3:30 PM · elevation
Lake Tappan is at 54.80 ft today, 5.5 ft higher than a year ago. It has fallen 0.01 ft since yesterday and is down 0.19 ft over 7 days.
Water level chart
ft above sea levelReading
Lake Tappan fishing report & conditions
updated Oct 26, 4:13 PM ETLevel steady, calm wind — good fall fishing day (6/10), best window 7:27 AM–8:27 AM (moonset near sunrise).
- Water temp—no water-temperature sensor on this water yet
- Air temphigh 70°F / low 46°FSunny
- WindCalm2–6 mph 6 AM–6 PM, gusts to 13
- Level54.80 ftLevel steady (−0.01 ft in 24 h)
Official New Jersey fishing info: NJ Fish & Wildlife — Freshwater fishing info
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 7:20 AM · Sunset 5:59 PM
Major fishing times
- Moon underfoot12:02 PM–2:02 PM
Minor fishing times
- Moonset7:27 AM–8:27 AMSunrise
- Moonrise5:28 PM–6:28 PMSunset
Fishing times for the next 7 days
| TodayOct 26 | 6/10Good | Major 12:02 PM–2:02 PM Minor 7:27 AM–8:27 AM · 5:28 PM–6:28 PM Calm wind 2–6 mph |
|---|---|---|
| TueOct 27 | 5/10Fair | Major 12:30 AM–2:30 AM · 1:00 PM–3:00 PM Minor 8:45 AM–9:45 AM · 6:08 PM–7:08 PM Light wind 2–7 mph |
| WedOct 28 | 2/10Poor | Major 1:31 AM–3:31 AM · 2:02 PM–4:02 PM Minor 10:03 AM–11:03 AM · 6:58 PM–7:58 PM Calm wind 1–4 mph |
| ThuOct 29 | 5/10Fair | Major 2:35 AM–4:35 AM · 3:07 PM–5:07 PM Minor 11:14 AM–12:14 PM · 8:01 PM–9:01 PM Light wind 1–7 mph |
| FriOct 30 | 4/10Fair | Major 3:39 AM–5:39 AM · 4:11 PM–6:11 PM Minor 12:13 PM–1:13 PM · 9:12 PM–10:12 PM Light wind 2–6 mph |
| SatOct 31 | 4/10Fair | Major 4:41 AM–6:41 AM · 5:11 PM–7:11 PM Minor 1:01 PM–2:01 PM · 10:28 PM–11:28 PM Calm wind 2–4 mph |
| SunNov 1 | 4/10Fair | Major 4:39 AM–6:39 AM · 5:06 PM–7:06 PM Minor 12:38 PM–1:38 PM · 10:43 PM–11:43 PM Calm wind 1–5 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 41.02, -74.00 (moon times from astronomical equations, Lake Tappan local time).
Weather & wind at Lake Tappan
air temperature, not water3-day forecast
- This Afternoon70° / 46°SunnyWind W 6 mphRain 2%
- Tuesday60° / 34°SunnyWind N 3 to 7 mphRain 3%
- Wednesday63° / 47°Widespread Frost then Mostly SunnyWind E 3 mphRain 0%
NOAA National Weather Service forecast for 41.018, -74.001 (grid OKX), issued Oct 26, 2:20 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.
Past 12 months
daily readings from the operator- Today54.80 ft
- Same date last year49.34 ft+5.5 ft change
- 12-month high55.43 ftAug 7, 2026
- 12-month low48.09 ftFeb 18, 2026
Last 10 days
| Date | Level (ft) | Change |
|---|---|---|
| Mon Oct 26 (today) | 54.79 | −0.03 |
| Sun Oct 25 | 54.82 | −0.04 |
| Sat Oct 24 | 54.86 | −0.06 |
| Fri Oct 23 | 54.92 | −0.02 |
| Thu Oct 22 | 54.94 | −0.03 |
| Wed Oct 21 | 54.97 | −0.02 |
| Tue Oct 20 | 54.99 | −0.01 |
| Mon Oct 19 | 55.00 | −0.04 |
| Sun Oct 18 | 55.04 | −0.06 |
| Sat Oct 17 | 55.10 | +0.01 |
Daily mean of all readings that day; today is the average so far.
Nearby lakes & rivers
- Woodcliff Lake3 mi · Lake · Hillsdale90.93 ft24h −0.03 ft
- Oradell Reservoir5 mi · Lake · Oradell22.12 ft24h −0.16 ft
- Passaic River at Dundee Dam at Clifton11 mi · River434 cfs121% of normal
- Passaic River at Passaic (great) Falls at Paterson12 mi · River115.39 ftstage 115.39 ft
- Ramapo River above Dam at Pompton Lakes15 mi · Lake · Dam at Pompton Lakes10.30 ft24h ±0.00 ft
- Passaic River at Little Falls15 mi · River353 cfs100% of normal
Nearby tides
Heading to the coast? The nearest NOAA tide station is New Millford, NJ, 6 mi away — see New Millford, NJ tide times on TideCharts USA.
About this data
- Gauge
- USGS 01376950 — Lake Tappan at Old Tappan NJ
- Location
- 41.0183, -74.0011 · New Jersey
- Measures
- Lake/reservoir water-surface elevation above NGVD 1929
- Daily statistics
- Not available (approved daily values)
- Latest reading
- Oct 26, 3:30 PM local time (provisional)
- Page built
- Oct 26, 2026 4:13 PM ET
Source: U.S. Geological Survey Water Data for the Nation (USGS monitoring location page). Readings every 15–60 minutes; the newest values are provisional. Percentiles compare today’s reading with every past year’s daily mean for the same calendar date. Weather: NOAA National Weather Service.