Late afternoon sun over Slim Lake, scattering a bright path across wind-textured water

Sussex County Lake Quality

New Jersey, 74 lakes, measured by NJDEP

Sussex County in New Jersey carries 74 monitored lakes — one of the lake-richer counties in our dataset. Coverage that dense usually reflects active lake-association sampling alongside state-agency monitoring. 16 of those lakes carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. For Sussex County the spread behind the average matters more than the average itself: a few nutrient-rich lakes among many clear ones produce the same figure as the inverse.

Most of the county's monitored lakes are shallow, under 50 feet, which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Great Gorge Lake has the lowest nutrient and algae readings in the county.

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Quick Answers for Sussex County

Cleanest lakes in Sussex County →Best swimming lakes in New Jersey →

Planning a trip? Check special fishing regulations for Great Gorge Lake — or check the official New Jersey fishing regulations.

All Lakes in Sussex County

74 lakes · 16 ranked on readings, 58 without enough sampling16 lakes ranked on readings · 58 without enough sampling, hidden

Include not-rated lakes (58)

#	Lake	Clarity	Phosphorus	Algae	Trophic	Max Depth	Access
1	Great Gorge LakeSussex	12.3 ft	11.1 µg/L	3.7 µg/L	No recent samples	No recent samples	Not recorded
2	Mashipacong PondSussex	9.7 ft	10.8 µg/L	5.2 µg/L	No recent samples	No recent samples	Not recorded
3	Lake OcquittunkSussex	4.1 ft	23.2 µg/L	13 µg/L	No recent samples	No recent samples	Not recorded
4	Lake TranquilitySussex	8.5 ft	15.2 µg/L	6.4 µg/L	No recent samples	No recent samples	Not recorded
5	Boardwalk LakeSussex	5.2 ft	40 µg/L	No recent samples	No recent samples	No recent samples	Not recorded
6	Collins PondSussex	6.1 ft	17.6 µg/L	13.1 µg/L	No recent samples	No recent samples	Not recorded
7	Cranberry LakeSussex	8.2 ft	21.5 µg/L	9.3 µg/L	No recent samples	No recent samples	Not recorded
8	Lake KemahSussex	5.4 ft	20 µg/L	22.1 µg/L	No recent samples	No recent samples	Not recorded
9	Reynolds LakeSussex	3.9 ft	33.8 µg/L	15.4 µg/L	No recent samples	No recent samples	Not recorded
10	Silver LakeSussex	3.9 ft	34.4 µg/L	18.8 µg/L	No recent samples	No recent samples	Not recorded
11	South End LakeSussex	4.4 ft	30 µg/L	No recent samples	No recent samples	No recent samples	Not recorded
12	Tamarack Cove LakeSussex	5.2 ft	30 µg/L	No recent samples	No recent samples	No recent samples	Not recorded
13	Three-Finger Cove LakeSussex	3.9 ft	40 µg/L	No recent samples	No recent samples	No recent samples	Not recorded
14	Turtle Cove LakeSussex	4.6 ft	30 µg/L	No recent samples	No recent samples	No recent samples	Not recorded
15	Unl LakeSussex	3.3 ft	43.1 µg/L	12.9 µg/L	No recent samples	No recent samples	Not recorded
16	Watchu PondSussex	5.6 ft	29.5 µg/L	16.6 µg/L	No recent samples	No recent samples	Not recorded
	Barry LakesSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Bear PondSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Beaver LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Canistear ReservoirSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Clearwater LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Clove Acres LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Control For Greenclean LakeSussex	3.9 ft	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Crandon LakesSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Cub LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	40 ft	Not recorded
	Culvers LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	49.2 ft	Not recorded
	Fairview LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	18.7 ft	Not recorded
	Forest LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Fox Hollow LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Fox Trail LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Franklin PondSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Glenwood LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	21.3 ft	Not recorded
	Hawthorne LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Highland LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Holiday LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Hopatcong A LakeSussex	4.3 ft	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Howells PondSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Hunts PondSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Johnson LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Kittatinny LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Lake AshroeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Lake GerardSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Lake GrinnellSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Lake IliffSussex	No recent samples	No recent samples	No recent samples	No recent samples	32 ft	Not recorded
	Lake LackawannaSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Lake LenapeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Lake PochungSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Lake RutherfordSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Lake StockholmSussex	No recent samples	No recent samples	No recent samples	No recent samples	15.4 ft	Not recorded
	Lake WandaSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Lake WildwoodSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Lake WindsorSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Little Swartswood LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Long Pine PondSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Manitou Cove LakeSussex	3.9 ft	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	New Wawayanda LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Paulins Kill LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Pleasant Valley LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	19 ft	Not recorded
	Quick PondSussex	6.6 ft	10 µg/L	25.9 µg/L	No recent samples	No recent samples	Not recorded
	Ryker LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Stag PondSussex	No recent samples	No recent samples	No recent samples	No recent samples	24.3 ft	Not recorded
	Steeny Kill LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Stickle PondSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Swartswood LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Tamarack LakeSussex	5.7 ft	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Treatment For Greenclean LakeSussex	3.9 ft	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Vernon Valley LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Wallkill LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Wawayanda LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	79 ft	Not recorded
	White LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Whites PondSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Willow Crest LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Wolf LakeSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Wright PondSussex	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded

NR = no nutrient or algae reading on record. The measurements are published as the authority reports them. Where the data comes from.

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Source: the New Jersey Department of Environmental Protection. See data sources.