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Hydrologic Data for Drought Monitoring in Pennsylvania. Dennis Risser US Geological Survey Shenandoah Valley Water Conference October 28, 2008. PA Drought Management. County. County. County. County. County. County. County. County. County. PEMA. DEP. County. Commonwealth

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slide1

Hydrologic Data for Drought Monitoring in Pennsylvania

Dennis Risser

US Geological Survey

Shenandoah Valley Water Conference

October 28, 2008

slide2

PA Drought Management

County

County

County

County

County

County

County

County

County

PEMA

DEP

County

Commonwealth

Drought

Coordinator

Emergency

Management

Council

Commonwealth

Drought Task Force

Governor

DEP Secretary

River

Basin

Commissions

Drought Watch

Drought Emergency

Drought Warning

County

County

slide3

Hydrologic Drought Indicators

  • Precipitation
  • Streamflow
  • Ground-Water Levels
  • Soil Moisture
  • Reservoir Storage
slide4

DEC 1998 JAN 1999 JUNE 1999

JULY 1999 SEPT 1999 MAY 2000

Drought 1998-99

PaDEP Drought-Status Maps

slide5

Real-Time Monitoring

Hydrologic

Database,

Investigations,

And

Research

Geostationary

Environmental

Satellite

Earth

Receiving

Station

USGS

Gage

With

Telemetry

Equipment

Drought

Monitoring

slide8

Oct 7, 2008

PRECIPITATION, IN INCHES

Precipitation Status Graph

90-Day

NORMAL

WATCH

WARNING

EMERGENCY

25% above mean

25% below mean

35% below mean

45% below mean

slide11

Ground-Water Status Graph

(Oct 7, 2006)

75th Percentile

25th Percentile

10th Percentile

5th Percentile

NORMAL

WATCH

WARNING

EMERGENCY

DEPTH TO GROUND WATER, FT BELOW LAND SURFACE

composite map sept 4 2002
Composite Map – Sept 4, 2002

Precipitation status

based on 120-day departure

slide14

Precipitation Status --2002 Drought

Cumberland County

PRECIPITATION (INCHES)

2002

2003

slide17

Timeliness

(Hurricane Floyd)

Chester County Well

HURRICANE FLOYD

Depth to Water, in Feet

12 13 14 15 16 17 18 19 20 21

September, 1999

slide18

Chester County Ground-Water Network

http://pa.water.usgs.gov/chesco/

slide19

SOMERSET COUNTY GW NETWORK

http://somersetcd.pacd.org/drought/