Hey bob-o and others, I fished the Current in the park (catch and release) on 11/18 after a similar storm event. The water was up and slightly off-color but fishing was excellent. The recent storms are a welcome relief as the water in the park and blue ribbon section have been very low for the past several months. More rain is still needed.
I use the USGS hydrograph that lilley directed you to as an indicator, however, the Akers Ferry gauging station is many river miles downstream from Montauk Park, Tan Vat, Baptist, etc and may be affected by rains "outside" of the headwater recharge area.