Advanced Hydrologic Prediction Service: Morristown: Powell River near Jonesville

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Weather Forecast Office Morristown, TN

Lower Mississippi River Forecast Center

Hydrograph

River at a Glance

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Weekly Chance of
Exceeding Levels

Chance of Exceeding Levels
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Tabular Data

Datum: N/A

Metadata

NOTE: Forecasts for the Powell River near Jonesville are issued routinely year-round.

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Downstream Gauge

Flood Categories (in feet)

Major Flood Stage:	35
Moderate Flood Stage:	30
Flood Stage:	18
Action Stage:	15

Historical Crests
(1) 44.32 ft on 04/05/1977
(2) 33.36 ft on 03/12/1963
(3) 33.00 ft on 01/18/1918
(4) 32.16 ft on 12/31/1969
(5) 30.80 ft on 01/08/1946
(6) 29.03 ft on 03/07/1967
(7) 26.78 ft on 01/30/1957
(8) 26.75 ft on 03/17/1973
(9) 26.59 ft on 02/11/1994
(10) 25.85 ft on 02/14/1948

Low Water Records
(1) 0.7 ft on 10/18/1961
(2) 0.8 ft on 12/27/1983
(2) 0.8 ft on 10/11/1943
(2) 0.8 ft on 10/10/1943
(2) 0.8 ft on 10/26/1941

Powell River near Jonesville location map

Flood Impacts

44.3	THE RIVER IS SIX FEET HIGHER THAN THE HIGHWAY 70 BRIDGE. MORE THAN 40 HOMES ARE FLOODED AND OVER 500 ACRES ARE INUNDATED.
40.0	THIS IS TWO FEET OVER THE ROAD ON THE HIGHWAY 70 BRIDGE. ABOUT 30 HOMES ARE AFFECTED WITH OVER 400 ACRES FLOODED.
38.0	THE RIVER REACHES THE PAVEMENT ON TOP OF THE HIGHWAY 70 BRIDGE.
35.0	BETWEEN TWELVE AND FIFTEEN HOMES ARE AFFECTED AND AROUND 300 ACRES ARE FLOODED.
32.0	THE RIVER REACHES THE BOTTOM OF THE HIGHWAY 70 BRIDGE.
30.0	ABOUT A HALF DOZEN HOMES ARE AFFECTED AND 200 ACRES AROUND HIGHWAY 70 ARE FLOODED.
25.0	A FEW HOMES ARE SLIGHTLY AFFECTED AND ABOUT 100 ACRES ARE FLOODED.
20.0	LOW LYING SECTIONS OF ROUTES 641 AND 783 ARE AFFECTED AND SOME PRIVATE DRIVEWAYS ARE FLOODED.
18.0	THE RIVER INVADES SEVERAL FIELDS AND REACHES A FEW FARM BUILDINGS.

About This Location

Latitude: 36.666000° N, Longitude: 83.100000° W, Horizontal Datum: NAD83

River Stage Reference Frame	Gauge Height	Flood Stage	Uses
NWS stage	0 ft	18 ft	Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum	Elevation (gauge height = 0)	Elevation (gauge height = flood stage)	Elevation information source
NAVD88	N/A	N/A	Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29	1259.08 ft	1277.08 ft	Older USGS topographic maps, NGVD29 benchmarks
MSL	N/A	N/A	Older USGS topographic maps, MSL benchmarks
Other	N/A	N/A

Other Data Sources:
Corps of Engineers (COE) Info for Jonesville

Resources

Hydrologic Resources

Additional Resources

Collaborative Agencies

The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.

NWS Information

National Weather Service
Morristown Weather Forecast Office
5974 Commerce Blvd.
Morristown, TN 37814
(423) 586-3771
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Page last modified: 3-Jul-2008 2:17 PM

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