You can maximize this map and then zoom and scroll around it. You can also turn on roads and labels. All 21 counties have their own pages, and some of the markers have links to their own pages as well. At last count, there are over 500 markers. The county lines are rather crudely drawn, but good enough.
About a mile long, in the Assunpink WMA. To the east you can find two other small lakes in the same watershed: Stone Tavern Lake, and Rising Sun Lake. Assunpink Creek drains into Lake Mercer, which is much larger than any of these.
The marker in the lower-center of the map is a super-easy put-in on Whale Creek, above. The other markers are a longer slog over the beach. All have convenient free parking (don't leave your vehicle in the launching area, that's a dick move!)
This lake has a lot of different branches to explore, and you can actually go quite a long way. The two marked sites are the best accesses for the northern and southern branches of the lake. Unfortunately, located in the middle of Asbury Park, the water is not the cleanest, especially near the railroad and toward the drain at the beach. The 'headwaters' are better.
The purple line on the map is the Delaware & Raritan, or D&R, Canal. The canal is a basically 40-mile-long pond. The water flows very slowly from west to east; it is essentially still. Access points generally coincide with bridges or locks.
This is the biggest of the lakes and ponds created by damming the Lawrence Brook. The map is centered on the northernmost launch site, which is the most central on the lake. There are two more access points to the south, which can be useful if you want to explore up the Lawrence Brook.
This site is different, depending on when you go there. During the summer, and especially on weekends, there can be a lot of motorboats around. Other times, you can have the whole place to yourself.
Lake Carnegie is a reservoir that straddles the borders of the towns of Princeton, West Windsor, Plainsboro and South Brunswick in Mercer and Middlesex counties in central New Jersey. The lake was created by construction of a dam along the Millstone River, though the lower portion of the lake actually follows the valley of its largest tributary, the Stony Brook, while the Millstone River crossed under the D&R Canal to the south. The lake is about three miles long, but only about 800 feet wide.
Lake Lefferts is a man-made lake, the result of the construction in 1928 of Lake Lefferts Dam, which captures and stores the flow of Matawan Creek. This is the nicest spot in northern Monmouth County. The lake is in three parts:
The lower part that contains the dam and the launch area and extends up to the Route 34 bridge. This part is fairly deep and free of obstructions.
The upper part from Route 34 to Route 516. This part is much shallower and weedy, especially at the far end.
An unusable section beyond Route 516. This part is pretty much just mud.
This is about the smallest body of water I would consider - more of a pond than a lake. But it is a nice place. Access could not be easier, the parking lot goes right down to the water. If you live nearby, it is a good place for a quick 'dip'. To go a little farther, you can hop over the railroad tracks and get into the far section and a little ways up the byzantine creek that fills the lake.