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* IMPORTANT: Next Generation Station Page

USGS 405610074382301 Lk Hopatcong 9600 ft NE of dam at Hopatcong NJ

PROVISIONAL DATA SUBJECT TO REVISION

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SURFACE-WATER RECORDS

LOCATION.--Lat 40°56'10.4", long 74°38'23.1" referenced to North American Datum of 1983, Morris County, NJ, Hydrologic Unit 02040105, 0.30 mi southeast of Pickerel Point, 0.55 mi south of Elba Point, and 0.80 mi northeast of Bertrand Island.   
DRAINAGE AREA.--25.3 mi².

WATER-QUALITY RECORDS

REMARKS.--Lake is formed by concrete spillway and earthfill dam completed about 1828. Crest of spillway was lowered 0.11 ft in 1925. Lake is used for recreation and regulated by four gates (3 by 5 ft), also by one 24-inch pipe with gate valve to recreation fountain 250 ft downstream from dam.
Available Parameters Available Period
All 12 Available Parameters for this site
  
00010 Temperature, water 2019-07-09  2019-09-03
00095 Specific cond at 25C 2019-07-09  2019-09-03
00300 Dissolved oxygen 2019-07-09  2019-09-03
00301 Diss oxygen,%saturtn 2019-07-09  2019-09-03
00400 pH 2019-07-09  2019-08-30
32295 fDOM, water, in situ 2019-07-09  2019-08-30
32315 Relative fChl, water, in situ 2019-07-09  2019-09-03
32316 fChl, water, in situ 2019-07-09  2019-08-30
32319 fPC, water, in situ 2019-07-09  2019-09-03
32321 Relative fPC, water, in situ 2019-07-09  2019-09-03
32322 Relative fDOM, water, in situ 2019-07-09  2019-09-03
63680 Turbidity, Form Neph 2019-07-09  2019-09-03

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Summary of all available data for this site
Instantaneous-data availability statement
*** There are no data available on the Waterdata system for the time period specified,
    although data may be available in the files of the local USGS office operating the station.