Conn Creek at Lake Hennessey

The past week

What floods at each level

• 16 ft

  Major Flood Stage. Water is several feet deep across floodplain on northern side of creek. Vineyards and local properties flooded, possibly exacerbated by backwatering of Lake Hennessey below. Local creek crossings inundated and impassable.

• 13.2 ft

  Moderate Flood Stage. Water spilling onto left bank floodplain (north side of creek). Local crossings flooded and backwatered.

• 10.2 ft

  Minor Flood Stage. Backwatering begins at local bridge crossings. Water level is approaching elevation of bridge decks, with possible overflow. NWS will issue a Flash Flood Warning if not yet already issued.

• 8 ft

  Action Stage. Water is 2 feet below backwatering at local landowner crossing at gaging site. NWS will issue a Flash Flood Watch if not yet already issued.