National Weather Service (NWS) Advanced Hydrologic Prediction Service (AHPS) gauge on the Ramapo River near Hamburg Turnpike/ Pompton Lake Dam. Note that the website provides up to three days of advanced warning of higher than usual water surface elevations. Flood stage is 11.5 feet of expected water depth. For reference, Hurricane Irene produced a depth of 22.6 feet in 2011 and is the flood of record.

National Weather Service Advanced Hydrologic Prediction Service gauge on the Wanaque River below the Wanaque Reservoir (Raymond Dam) and 50 feet above Ringwood Avenue. As above, the website provides up to three days of advanced warning of higher than usual water surface elevations. Flood stage is 5 feet of expected water depth. For reference, the Hurricane Irene produced a depth of 8 feet in 2011 but was not the flood of record April 1981. 

Ramapo River at Pompton Lakes
Pequannock River at Riverdale
Wanaque River at Wanaque
Pompton River at Pompton Plains