Reservoir Report

Wanaque Reservoir At Wanaque Nj reservoir

New-Jersey, USA USGS
Today high
--
Tonight low
--
Current storage
297ft
% of normal
-1%
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Right now · current storage
Wanaque Reservoir At Wanaque Nj
USGS · 01386990
297 ft
As of 2026-05-11
Seasonal avg
301
Record max
304
24h change
0.0%
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Wanaque Reservoir At Wanaque Nj -- None reservoir
Wanaque Reservoir At Wanaque Nj None
About this reservoir

Wanaque Reservoir At Wanaque Nj

Wanaque Reservoir, located in Wanaque, New Jersey, is a man-made lake created in the 1920s by the construction of the Wanaque Dam. It is used as a source of drinking water for more than 3 million people in New Jersey. The reservoir's hydrology is primarily fed by the Wanaque River, a major tributary of the Pequannock River, and smaller streams that flow into it. The surface flow and snowpack providers for the reservoir include the Wanaque River and its tributaries, as well as precipitation and meltwater from the surrounding mountains. The reservoir is strictly regulated for public safety, and there are no agricultural or recreational uses allowed. However, there are several parks and hiking trails in the surrounding area that offer picturesque views of the reservoir.

StateNone
OperatorUSGS
Site ID01386990
Percent of normal-1%
Last updated2026-05-11
Records since2007
Storage trends

Daily levels at Wanaque Reservoir At Wanaque Nj

Storage volume, pool elevation, and total release plotted from the operating agency's daily observations.

Lake or reservoir water surface elevation above NGVD 1929, ft

ft · code 62614

Detailed forecast

Plan around the weather

Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

5-day forecast table

Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Regional inflow

Nearby streamflow gauges

USGS streamgauges around Wanaque Reservoir At Wanaque Nj -- inflows here typically show up in storage 24-72 hours later.

Track Wanaque Reservoir At Wanaque Nj in the Snoflo app

Save this reservoir as a favorite and set push alerts when storage crosses a threshold (e.g. "alert me at 80% of normal").

FAQ

About Wanaque Reservoir At Wanaque Nj

Where does the data for Wanaque Reservoir At Wanaque Nj come from?

Daily storage, pool elevation, and release rates are sourced from USGS, USBR, and USACE monitoring stations. Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.

How often is the report updated?

Storage observations are updated daily by the operating agency. The 15-day weather forecast refreshes throughout the day. Snoflo caches and renders the most recent observation -- check the "as of" timestamp on the storage card.

What does the Hazard hazard rating mean?

The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.

What's "% of normal"?

The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).

Can I get alerts when storage crosses a threshold?

Yes -- alerts are managed in the Snoflo iOS app. Favorite this reservoir, set a threshold, and you'll get a push the moment conditions cross.

Premium feature

Favorites and alerts are part of Snoflo Premium. Save reservoirs, set storage thresholds, and get push notifications when conditions cross.

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Manage alerts in the Snoflo app

Custom alerts are configured in the iOS app -- favorite this reservoir, set a threshold, and you'll get a push the moment conditions cross.

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