They are all important!! Well, some more than other, I suppose. The Delaware river is obviously the most important, for Delaware and PA. And the Hudson is really important because of NY. read more
New Jersey Lakes Shown on the Map: Greenwood Lake, Lake Hopatcong, Mannington Meadows, Round Valley Reservoir and Wanaque Reservoir. New Jersey Stream and River Levels The United States Geological Survey has a number of stream gages located throughout New Jersey. read more