Swimming in a Sea of Asphalt

Stormwater Management in Greenville CountyMay 30th, 2007

C. Brannon Andersen, Gregory P. Lewis, Weston Dripps, Suresh Muthukrishnan

Furman UniversityFurman University

Land Cover in the Enoree River BasinLand Cover in the Enoree River Basin

Muthukrishnan Muthukrishnan et alet al (2007)(2007)

temperature turbidity

HYDROSPHERE

surface, soil, ground

chemistry flow

WATERSHED INTEGRITY

waste air pollution

riparian zone damage habitat loss

HUMANS impervious surfaces

runoff flooding

scouring channelization

fishes amphibians

BIOSPHERE

microbes plants/algae inverts

bedrock soil

LITHOSPHERE

microbes plant roots

dust gases

ATMOSPHERE

rainfall

volume chemistry

Urbanization and

Stream Discharge

HydrologyHydrologyImperviousnessImperviousness

ForestedForestedET = 40%ET = 40%

DI = 25%DI = 25%

SI = 25%SI = 25%

RO = 10%RO = 10%

35-50%35-50%ET = 35%ET = 35%

DI = 20%DI = 20%

SI = 20%SI = 20%

RO = 30%RO = 30%

75-100%75-100%ET = 30%ET = 30%

DI = 5%DI = 5%

SI = 10%SI = 10%

RO = 55%RO = 55%

FloodsFloods

Flooding Frequency and IntensityFlooding Frequency and Intensity

TimeTime

Dis

char

geD

isch

arge

RainRain

Base FlowBase Flow

Storm FlowStorm Flow

RainRain

TimeTime

Dis

char

geD

isch

arge

Base FlowBase Flow

Storm FlowStorm Flow

BY33

Urbanized headwaters:

Mountain Creek, Brushy Creek and Rocky Creek

Watersheds

Land Cover in the Enoree River BasinLand Cover in the Enoree River Basin

Muthukrishnan Muthukrishnan et alet al (2007)(2007)

Mountain Creek WatershedLand Cover Map

Mountain CreekMountain Creek

Mountain Creek WatershedImperviousness Map

Brushy Creek Land CoverBrushy Creek Land Cover

Brushy Creek Impervious SurfaceBrushy Creek Impervious Surface

Rocky Creek LandcoverRocky Creek Landcover

1997 2003Water 0.6 0.5Vegetation 26.7 24.8Urban 8.8 10.7

Area (sq. km.)

Rocky Creek UrbanizationRocky Creek Urbanization

1997 2003Water 0.6 0.5Vegetation 26.7 24.8Urban 8.8 10.7

Area (sq. km.)

Rocky Creek UrbanizationRocky Creek Urbanization

Urbanization and

Water Quality

Brushy CreekBrushy CreekWater QualityWater Quality

r2 = 0.75

Water Quality Water Quality and and

UrbanizationUrbanization

r2 = 0.75

r2 = 0.81