With another March storm looming this weekend, 10 counties in New Jersey have been placed under a flood watch with heavy rain in the forecast. The latest storm — the fourth to hit the Garden State in just seven days — is expected to dump another 1 to 2 inches of rain on areas that are still saturated from the previous storms. “Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations,” the National Weather Service said in its flood watch. “Creeks and streams are running high and may rise out of their banks and could flood with more heavy …