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Important for you to know:

  • New to WDFN: see current water conditions throughout the state using the new State Pages. Filter by continuous data type and age of data, view latest values, and link to graphing options to explore the data further. To learn more, read our announcement on the Water Data for the Nation blog.

The crest of the dam at Lake Hopatcong is 9.0 feet. NJSP high-water level is 9.5 feet when boat speeds are greatly restricted and no wakes are allowed. Rain gage data are available from this link.

Important Legacy real-time page

USGS Parameter Group Data Types Start Date End Date
Physical Daily Values, Unit Values 2007-10-01 2024-11-21
n/a Peak Measurements 1887-08-04 2023-07-10
n/a USGS Annual Water Data Reports Site 2006-01-01 2023-01-01
Water Data for the Nation inventory

Monitoring location 01455400 is associated with a Lake, Reservoir, Impoundment in Morris County, New Jersey. Current conditions of Gage height are available. Water data back to 1887 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
01455400 n/a
Site name
Lake Hopatcong at Landing NJ n/a
Site type
Lake, Reservoir, Impoundment
LK
DMS latitude 405503 n/a
DMS longitude 0743951 n/a
Decimal latitude 40.9175 n/a
Decimal longitude -74.6641667 n/a
Latitude-longitude method
Interpolated from MAP. M
Latitude-longitude accuracy
Accurate to + or - 1 sec. S
Latitude-longitude datum
North American Datum of 1983 NAD83
Decimal Latitude-longitude datum North American Datum of 1983 NAD83
District
New Jersey 34
State
New Jersey 34
County
Morris County 027
Country US n/a
Land net location description Roxbury Township n/a
Name of location map Stanhope n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 914.57 feet n/a
Method altitude determined Level or other surveyed method. L
Altitude accuracy .01 feet n/a
Altitude datum
National Geodetic Vertical Datum of 1929 NGVD29
Subbasin hydrologic unit
Middle Delaware-Musconetcong 02040105
Drainage basin
n/a
Topographic setting
n/a
Flags for instruments at site NNNNYNNNNYNNNNNNNNNNNNNNNNNNNN n/a
Date of first construction
n/a
Date site established or inventoried 20020625 n/a
Drainage area
25.3 square miles n/a
Contributing drainage area n/a
Time Zone abbreviation EST n/a
Site honors Daylight Saving Time
Y n/a
Data reliability
n/a
Data-other GW files NNNNNNNN n/a
National aquifer n/a
Local aquifer n/a
Local aquifer type
n/a
Well depth n/a
Hole depth
n/a
Source of depth data n/a
Project number n/a

Operated in cooperation with:

logo for New Jersey Department of Environmental Protection
New Jersey Department of Environmental Protection
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USGS - Cooperative Matching Funds