The information on this page reflects the suspected or confirmed HAB events that the Department was made aware of in 2019. There may be other HABs that are occurring in NJ that are not reflected here. If you see a suspected HAB,
. In the case of a suspected bloom, people, pets and livestock should avoid contact with discolored water or water that has algae scums on the surface. Do not drink or consume the water. Do not eat fish from the waterbody. If there is contact with the water, rinse off as soon as possible with fresh water and seek medical or veterinary assistance if people or animals are experiencing adverse health effects after being exposed to a bloom.
The adjacent New Jersey state map image reflects the locations of both confirmed HABs as well as reports where HABs were not found to be present. Numbers on the map correspond to the accompanying table below which provides additional information regarding each HAB report including the affected waterbody(ies), county and municipality, and whether the bloom is suspected, confirmed or not a HAB after all. If the bloom is a HAB, the table also lists the lead agency, whether or not Advisories have been posted, if so, by whom, when they were posted and when they were removed. Links to additional information, when available, are also included.
interactive map which contains information regarding all of the 2019 reported HAB locations, click the image on the far right.
mobile app.
Map Number (by Municipality) |
Waterbody Name: |
County: |
Municipality: |
Date Bloom Reported: |
Status: |
Lead Agency: |
Advisory Posted (Y/N): |
Bathing Beach Closure
(In season) |
If Yes, By Whom: |
Date Posted: |
Date Removed: |
Actions |
1 |
Deal Lake |
Monmouth |
Asbury Park City |
5/10/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Monmouth County Health Dept |
5/13/19 |
1/10/20 |
Completed |
1 |
Sunset Lake |
Monmouth |
Asbury Park City |
5/10/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Monmouth County Health Dept |
5/13/19 |
|
Continuing |
2 |
Spruce Run Reservoir |
Hunterdon |
Clinton Township |
6/1/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
Yes |
State Parks Service |
6/1/19 |
6/14/19 |
Completed |
2 |
Spruce Run Reservoir |
Hunterdon |
Clinton Township |
6/15/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
Yes |
State Parks Service |
6/15/19 |
9/13/19 |
Completed |
2 |
Spruce Run Reservoir |
Hunterdon |
Clinton Township |
9/16/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
Yes |
State Parks Service |
9/19/19 |
|
Continuing |
3 |
Swartswood Lake |
Sussex |
Stillwater Township |
6/6/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
Yes |
State Parks Service |
6/6/19 |
6/14/19 |
Completed |
3 |
Swartswood Lake |
Sussex |
Stillwater Township |
7/20/19 |
Confirmed
(at boat launch area only) |
DEP Bureau of Freshwater and Biological Monitoring |
Yes
(at boat launch area only) |
No |
State Parks Service |
7/25/19 |
8/16/19 |
Completed |
4 |
Lake Mohawk |
Sussex |
Sparta Township |
6/17/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
No |
Sussex County Health Dept |
6/19/19 |
7/3/19 |
Completed |
5 |
Lake Hopatcong
Sampling Results - 10/31/19
Sampling Results - 06/10/19-10/10/19
Press Releases - 6/27, 7/3, 7/12, 7/26, 8/1, 8/14 and 9/20
Lake Hopatcong Commission Presentation (7/8/19)
FAQs(follow link for known specific beach closures) |
Sussex |
Hopatcong Borough |
6/18/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
Yes |
(follow link for list of Agencies involved in posting closures |
6/19/19 |
11/19/19 |
Completed |
6 |
Belcher's Creek |
Passaic |
West Milford Township |
6/28/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
7 |
Rosedale Lake |
Mercer |
Pennington Borough |
7/5/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
No |
Mercer County Health Dept |
7/5/19 |
11/15/19 |
Completed |
8 |
Topanemus Lake |
Monmouth |
Freehold Township |
7/7/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
6 |
Monksville Reservoir |
Passaic |
West Milford Borough |
7/6/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
6 |
Monksville Reservoir |
Passaic |
West Milford Borough |
10/2/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
State Parks Service |
10/4/19 |
12/18/19 |
Completed |
9 |
Big Flat Brook |
Sussex |
Sandyston Township |
7/9/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
10 |
Unnamed pond |
Bergen |
Franklin Lakes Borough |
7/9/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
11 |
Allamuchy Pond |
Warren |
Allamuchy Township |
7/9/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
7 |
Willow Pond |
Mercer |
Pennington Borough |
7/9/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
12 |
Spring Lake |
Mercer |
Trenton City |
7/10/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
6 |
Greenwood Lake
Sampling and Flight Results - information updated on 11/8/19 Press Release (7/17) |
Passaic |
West Milford Borough |
7/12/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
Yes |
West Milford Health Dept/
State Park Service |
7/16/19 |
11/8/19 |
Completed |
13 |
Musconetcong Lake |
Sussex |
Stanhope Borough |
7/16/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
13 |
Musconetcong Lake |
Sussex |
Stanhope Borough |
7/29/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
State Parks Service |
8/1/19 |
9/19/19 |
Completed |
6 |
Wawayanda Lake |
Passaic |
West Milford Borough |
7/17/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
14 |
Mercer County Park Lake |
Mercer |
West Windsor Borough |
7/19/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
15 |
Camp Taylor Campground |
Warren |
Knowlton Township |
7/22/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
16 |
Casting Pond |
Passaic |
Ringwood Borough |
7/27/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
17 |
Budd Lake |
Morris |
Mount Olive Township |
7/29/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
Yes |
Mt. Olive Twp Health Dept. |
8/1/19 |
1/10/20 |
Completed |
18 |
Hopkins Pond |
Camden |
Haddonfield Borough |
7/31/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
19 |
Manasquan Reservoir |
Monmouth |
Howell Township |
8/5/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Monmouth County Health Dept |
8/7/19 |
8/23/19 |
Completed |
19 |
Manasquan Reservoir |
Monmouth |
Howell Township |
10/30/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Monmouth County Health Dept |
10/31/19 |
11/7/19 |
Completed |
12 |
Stacy Pond |
Mercer |
Trenton City |
8/5/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Trenton Health Dept |
8/8/19 |
11/15/19 |
Completed |
20 |
Memorial Lake |
Salem |
WoodsTown Borough |
8/7/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Salem County Health Dept. |
8/8/19 |
11/7/19 |
Completed |
38 |
Rogerene Lake |
Morris |
Mount Arlington Borough |
8/10/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
Yes |
Mount Arlington Health Dept. |
8/14/19 |
9/13/19 |
Completed |
21 |
Manalapan Lake (Thompson Park) |
Middlesex |
Jamesburg Borough |
8/12/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
4 |
Lake Grinnell |
Sussex |
Sparta Township |
8/13/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
22 |
Stone Tavern Lake |
Monmouth |
Upper Freehold Township |
8/14/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
23 |
Big Timber Creek Park Pond |
Camden |
Gloucester Township |
8/14/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
24 |
Rothman Lake |
Morris |
Roxbury Township |
8/14/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
23 |
Dramasei Park Lake |
Camden |
Gloucester Township |
8/14/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Camden County Health Dept. |
8/19/19 |
|
Continuing |
25 |
Kennedy Lake (Colliers Mills) |
Ocean |
Jackson Township |
8/15/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
26 |
Sussex Co. Fire Academy Pond |
Sussex |
Hampton Township |
8/16/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Sussex County Fire Academy |
8/21/19 |
11/7/19 |
Completed |
27 |
Papaianni Lake |
Middlesex |
Edison Township |
8/24/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Middlesex County Health Dept. |
8/29/19 |
12/18/19 |
Completed |
28 |
Kendall Lake |
Gloucester |
Mantua Township |
8/26/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
29 |
Middlesex (Clark) Reservoir |
Union |
Clark Township |
8/26/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
30 |
Elizabeth River |
Union |
Hillside Township |
8/27/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
31 |
Sylvan Lake |
Burlington |
Burlington Township |
8/26/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Burlington Township Health Dept. |
8/29/19 |
10/14/19 |
Completed |
32 |
Veterans Park Lake |
Mercer |
Hamilton Township |
8/28/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
33 |
Amico Island Pond |
Burlington |
Delran Township |
8/29/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Burlington County Parks Dept. |
8/30/19 |
|
Continuing |
34 |
Huff Pond |
Bergen |
Montvale Borough |
8/29/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
35 |
Branch Brook Park Lake |
Essex |
Newark City |
8/30/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Essex Regional Health Commission |
9/5/19 |
|
Continuing |
36 |
Hackensack River |
Hudson |
Jersey City |
8/31/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
37 |
Elmer Lake |
Salem |
Elmer Borough |
9/1/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Salem County Health Dept. |
9/5/19 |
12/6/19 |
Completed |
39 |
East Lake |
Salem |
Pilesgrove Township |
9/5/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Salem County Health Dept. |
9/11/19 |
11/7/19 |
Completed |
40 |
Peters Creek |
Camden |
Oaklyn Borough |
9/5/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
41 |
Cinnaminson Park Pond |
Burlington |
Cinnaminson Township |
9/6/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
42 |
Pemberton Lake |
Burlington |
Pemberton Township |
9/10/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
DEP Fish and Wildlife |
9/13/19 |
|
Continuing |
43 |
Lake Ceva |
Mercer |
Ewing Township |
9/10/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Mercer County Health Dept |
9/13/19 |
11/15/19 |
Completed |
44 |
Barclays Farm Pond |
Camden |
Cherry Hill Township |
9/10/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
45 |
Daretown Lake |
Salem |
Upper Pittsgrove Township |
9/12/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Salem County Health Dept. |
9/18/19 |
12/10/19 |
Completed |
39 |
Avis Mill Pond |
Salem |
Pilegrove Township |
9/16/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Salem County Health Dept. |
9/18/19 |
10/25/19 |
Completed |
39 |
Slabtown |
Salem |
Pilesgrove Township |
9/16/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Salem County Health Dept. |
9/18/19 |
11/7/19 |
Completed |
39 |
Salem River
(between Avis Mill Pond and Slabtown Lake) |
Salem |
Pilegrove Township |
9/16/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Salem County Health Dept. |
9/18/19 |
10/25/19 |
Completed |
45 |
Salem River Reservoir |
Salem |
Upper Pittsgrove Township |
9/16/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
46 |
Crystal Lake |
Camden |
Haddon Township |
9/11/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
47 |
Fairview Farm Pond |
Somerset |
Bedminster Township |
9/17/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
48 |
Unnamed pond |
Burlington |
Chesterfield Township |
9/17/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Burlington County Health Dept. |
9/24/19 |
12/10/19 |
Completed |
49 |
Ballinger Lake |
Salem |
Alloway Township |
9/20/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
50 |
Lake Owassa |
Sussex |
Frankford Township |
9/25/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Lake Owassa Community Assoc. |
9/27/19 |
12/10/19 |
Completed |
51 |
Smithville Lake |
Burlington |
Eastampton Township |
9/30/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Burlington County Parks Dept. |
10/2/19 |
1/10/20 |
Completed |
16 |
Shepherd Lake |
Passaic |
Ringwood Borough |
10/1/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
Closed for season |
State Parks Service |
10/3/19 |
11/7/19 |
Completed |
45 |
Muddy Run Unnamed Tributary |
Salem |
Upper Pittsgrove Township |
10/3/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
52 |
Farrington Lake |
Middlesex |
East Brunswick Township |
10/13/19 |
HAB not present |
DEP Bureau of Freshwater and Biological Monitoring |
No |
----- |
----- |
----- |
----- |
Completed |
53 |
Canistear Reservoir |
Sussex |
Vernon Township |
10/30/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
No
(Recreation by permit only) |
NA |
Newark Water Department |
|
|
Completed |
54 |
Mountain Lake |
Warren |
Liberty Township |
11/11/19 |
Confirmed |
DEP Bureau of Freshwater and Biological Monitoring |
Yes |
NA |
Warren County Health Dept |
11/22/19 |
|
Continuing |