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Hydrology of South Carolina. Bud Badr Chief, Hydrology Section South Carolina Department of Natural Resources. How much water do we have, and where is it?. South Carolina’s Water Budget. How much water do we have, and where is it?. Surface Water Rivers Lakes. How much water do we have,

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hydrology of south carolina

Hydrology of South Carolina

Bud Badr

Chief, Hydrology Section

South Carolina Department of Natural Resources

slide4

How much water do we have,

and where is it?

  • Surface Water
    • Rivers
    • Lakes
slide6

How much water do we have,

and where is it?

  • Surface Water
    • Rivers
    • Lakes
  • Ground Water
    • Coastal Plain aquifers
    • Piedmont fractures
slide7

Piedmont

LINE

Coastal

Plain

FALL

slide9

How much water do we have,

and where is it?

  • Surface Water
    • Rivers
    • Lakes
  • Ground Water
    • Coastal Plain aquifers
    • Piedmont fractures
  • Surface Water and Ground Water are Connected
slide12

Is there enough water in South Carolina?

  • There is usually more than enough water.
  • Problems occur because of variations in water availability. The water needs to be in the right place at the right time.
slide13

Factors Affecting Water Availability

  • Most of South Carolina’s rivers are shared with North Carolina or Georgia.
slide15

Factors Affecting Water Availability

  • Most of South Carolina’s rivers are shared with North Carolina or Georgia.
  • Seasonal variations in rainfall
slide17

Station Name

and Location

Lowest Daily Mean Flow(Date)

Highest Daily Mean Flow(Date)

AnnualMean Flow(Year)

Waccamaw River

near Longs

58(Nov. 18, 1999)

28,100(Sep. 23, 1999)

3,556(1999)

Congaree River

at Columbia

1,360(Sep. 16, 1998)

90,600(Feb. 5, 1998)

11,680(1998)

Stevens Creek

near Modoc

7.1(Sep. 1, 1998)

16,300(Mar. 9, 1998)

544(1998)

Coosawhatchie River near Grays

0.06(Jul. 10, 1998)

7,030(Feb. 6, 1998)

718(1998)

slide19

Factors Affecting Water Availability

  • Most of South Carolina’s rivers are shared with North Carolina or Georgia.
  • Seasonal variations in rainfall
  • Drought
slide21

Factors Affecting Water Availability

  • Most of South Carolina’s rivers are shared with North Carolina or Georgia.
  • Seasonal variations in rainfall
  • Drought
  • Flood
slide22

Factors Affecting Water Availability

  • Most of South Carolina’s rivers are shared with North Carolina or Georgia.
  • Seasonal variations in rainfall
  • Drought
  • Flood
  • Salt water intrusion
slide23

SALTWATER ENCROACHMENT

IN THE UPPER FLORIDAN AQUIFER

NEAR HILTON HEAD ISLAND, S.C.

FRESHWATER

BRACKISH WATER

SALTWATER

slide26

Can we run out of water?

  • Pee Dee River
  • Savannah River
slide28

LAKE THURMOND

335

FLOOD POOL

330

NORMAL LAKE LEVELS

326

CONSERVATION

POOL

DAM

LOWEST LAKE LEVEL

315

312

DEAD POOL

slide29

Can we run out of water?

  • Pee Dee River
  • Savannah River
  • Dry wells
slide30

Town of Neeses

Declines in town wells due to combined effects of drought and irrigation pumping.

Midway community

Declines in 17 residential wells.

(Water-table and Black Creek aquifers)

Town of Ridgeland

Declines in 30+ residential wells.

(Upper Floridan aquifer)

slide31

How can we meet water demands?

  • South Carolina Water Plan
slide32

South Carolina

Water Plan

Considerations, guidelines, and procedures for the effective management of the State’s water resources in order to sustain the availability of water for present and future use.

South Carolina Department

of Natural Resources

Land, Water, and Conservation Division

1201 Main Street, Suite 1100

Columbia, South Carolina 29201

1998

slide33

Ground Water Allocation

INDUSTRY &

IRRIGATION

DOMESTIC

SHALLOW AQUIFER

DEEP AQUIFER

slide34

How can we meet water demands?

  • South Carolina Water Plan
  • Savannah River Model
slide36

Savannah River Basin

Comprehensive Water Resources Study

Major areas identified for analysis:

  • Water Supply Allocations
  • Flood Control
  • Hydropower Generation
  • Water Quality and Flow
  • Fish and Wildlife
  • Aquatic Plant Control
  • Recreation
slide37

How can we meet water demands?

  • South Carolina Water Plan
  • Savannah River Model
  • FERC Relicensing
slide38

Keowee-Jocassee

August 2016

Catawba-Wateree

August 2008

Yadkin-Pee Dee

April 2008

Buzzards Roost

November 2035

Saluda

August 2007

Santee-Cooper

March 2006

Expiration dates of FERC hydropower licenses

slide39

How can we meet water demands?

  • South Carolina Water Plan
  • Savannah River Model
  • FERC Relicensing
  • Monitoring Networks
slide41

Ground Water Monitoring

Well Network

A network of 76 wells equipped with automatic water-level recorders that

record water levels every hour.

SCDNR

USGS

Potentiometric Maps

A network of 543 wells that are measured once every 5 years to construct potentiometric maps of the Floridan, Black Creek, and Middendorf aquifer systems.