Average: 77.6

Hourly 3

Range: 30 -97

Water Management Chapter 16

http://www.life.uiuc.edu/animalbiology/105/Name: eee105Password: prAIRie

Human effects on the hydrological cycle

Increased evaporation

cooling

Human effects on the hydrological cycle

Increased evaporation

cooling

irrigation

Human effects on the hydrological cycle

Increased evaporation

Increased runoff

deforestation

Human effects on the hydrological cycle

Increased evaporation

Increased runoff

deforestation pavement

Human effects on the hydrological cycle

Increased evaporation

Increased runoff

deforestation pavement

sewers

Human effects on the hydrological cycle

Increased evaporation

Increased runoff

Water usage

domestic

industry

agriculture

How water is used

Water usage

Agricultural Water Use

Irrigation is the major consumptive use of water in most parts of world

Cost of water is a limiting factor on agriculture

Water usage

Industrial Water Use

, and 23% worldwide

, and is returned to the source.

Accounts for nearly 50% of all water withdrawal in US

90% of water used by industry is for cooling

Water usage

Industrial Water Use

, and 23% worldwide

, and is returned to the source.

Accounts for nearly 50% of all water withdrawal in US

90% of water used by industry is for cooling

Water used to dissipate and transport waste -- stream and lake degradation

Water usage

Water usage

Domestic Water Use

70% used as solvent to carry wastes 30% used for lawn and garden very small fraction used for drinking

must be treated before release

Natural processes cannot cope with highly concentrated urban wastes

• Average person in NA home uses approximately 100 gallons of water per day

Ecology of freshwaters

Lakes, rivers, and streams

LimnologyLimnology

Lakes are born by catastrophe

age, and quietly die

Origins of LakesOrigins of Lakes

Kettle lakes

Kettle lakes

glacier

Origins of LakesOrigins of Lakes

Kettle lakes

•

glacier

Origins of LakesOrigins of Lakes

Kettle lakes

•

glacier

Origins of LakesOrigins of Lakes

Kettle lakes

•

glacier

Origins of LakesOrigins of Lakes

Glacial scouring Origins of LakesOrigins of Lakes

Tectonic origins Origins of LakesOrigins of Lakes

Tectonic origins Origins of LakesOrigins of Lakes

e.g. Lake Baikal

Tectonic origins Origins of LakesOrigins of Lakes

e.g. Lake Baikal

Volcanic origins 4,000 feet d

eepCrater Lake, OR

Origins of LakesOrigins of Lakes

Reelfoot Lake, TN

Origins of LakesOrigins of Lakes

Earthquake

New Madrid quakes

Origins of LakesOrigins of Lakes

Reelfoot Lake, TN

siltation detritus sedimentation

emergent vegetationwetland

Aging of LakesAging of Lakes

LimnologyLimnology

Extinct lakes

Lake Agassiz