HAMweather River Center - Allegheny River At Natrona L&d, PA

Allegheny Riverat Natrona L&D, PA (Gauge NATP1)
Forecast | Observation History | Stage Impacts/Record Events

Stages:

Normal

Action

Flood

Moderate Flood

Major Flood

Normal Stage: 11.52 ft
Flow: 12.4 kcfs*
(impacts and historical events)

Action Stages:

17.2': Action

21': Flood

24': Moderate Flood

26': Major Flood

Stage		Date CST	Stage ft	Flow kcfs
	FORECAST	02/20/2012 07:00 pm	12.30	19.500
	FORECAST	02/20/2012 01:00 pm	12.30	19.500
	FORECAST	02/20/2012 07:00 am	12.40	20.500
	FORECAST	02/20/2012 01:00 am	12.40	20.500
	FORECAST	02/19/2012 07:00 pm	12.50	21.500
	FORECAST	02/19/2012 01:00 pm	12.50	21.500
	FORECAST	02/19/2012 07:00 am	12.60	22.500
	FORECAST	02/19/2012 01:00 am	12.60	22.500
	FORECAST	02/18/2012 07:00 pm	12.60	22.500
	FORECAST	02/18/2012 01:00 pm	12.50	21.500
	FORECAST	02/18/2012 07:00 am	12.40	20.500
	FORECAST	02/18/2012 01:00 am	12.30	19.500
	FORECAST	02/17/2012 07:00 pm	12.10	17.600
	FORECAST	02/17/2012 01:00 pm	12.00	16.700
	FORECAST	02/17/2012 07:00 am	11.80	14.800
	FORECAST	02/17/2012 01:00 am	11.80	14.800
	FORECAST	02/16/2012 07:00 pm	11.90	15.700
	FORECAST	02/16/2012 01:00 pm	11.80	14.800
	FORECAST	02/16/2012 07:00 am	11.60	13.000
	CURRENT	02/16/2012 01:15 am	11.52	12.400
		02/16/2012 01:00 am	11.51	12.300
		02/16/2012 12:45 am	11.51	12.300
		02/16/2012 12:30 am	11.52	12.400
		02/16/2012 12:15 am	11.52	12.400
		02/16/2012 12:00 am	11.52	12.400
		02/15/2012 11:45 pm	11.53	12.400
		02/15/2012 11:30 pm	11.54	12.500
		02/15/2012 11:15 pm	11.55	12.600
		02/15/2012 11:00 pm	11.55	12.600
		02/15/2012 10:45 pm	11.56	12.700
		02/15/2012 10:30 pm	11.57	12.800
		02/15/2012 10:15 pm	11.57	12.800
		02/15/2012 10:00 pm	11.60	13.000
		02/15/2012 09:45 pm	11.60	13.000
		02/15/2012 09:30 pm	11.60	13.000
		02/15/2012 09:15 pm	11.61	13.100
		02/15/2012 09:00 pm	11.61	13.100
		02/15/2012 08:45 pm	11.62	13.200
		02/15/2012 08:30 pm	11.63	13.300
		02/15/2012 08:15 pm	11.63	13.300
		02/15/2012 08:00 pm	11.63	13.300
		02/15/2012 07:45 pm	11.64	13.300
		02/15/2012 07:30 pm	11.63	13.300
		02/15/2012 07:15 pm	11.65	13.400
		02/15/2012 07:00 pm	11.65	13.400
		02/15/2012 06:45 pm	11.65	13.400
		02/15/2012 06:30 pm	11.65	13.400
		02/15/2012 06:15 pm	11.66	13.500
		02/15/2012 06:00 pm	11.67	13.600
		02/15/2012 05:45 pm	11.66	13.500

Stage Impacts
29.4	PRR MAIN LINE AND SIDINGS AFFECTED AT TARENTUM PA 3 MILES DOWNSTREAM FLOODS.
21.5	THE NATRONA WATER COMPANY IS AFFECTED.
21.3	WATER BEGINS TO BACK UP INTO THE SEWERS AT BRAEBURN STEEL CO.
21.0	Lock walls overtopped.
18.0	Navigation suspended, lock out of service.

Historical Crests	Record Lows
1) 32.10 ft on 03/18/1936 2) 28.40 ft on 12/30/1942 3) 27.60 ft on 01/22/1959 4) 27.50 ft on 06/23/1972 5) 26.40 ft on 03/10/1964 6) 24.20 ft on 09/18/2004 7) 23.10 ft on 01/20/1996 8) 22.10 ft on 02/14/1966 9) 21.80 ft on 02/17/1976 10) 21.40 ft on 03/16/2007	1) 0.00 ft on 01/01/1980

Data provided by NOAA Advanced Hydrologic Prediction Service