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Surface Water (Lakes, streams, ponds, wetlands, etc.)

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Presentation on theme: "Surface Water (Lakes, streams, ponds, wetlands, etc.)"— Presentation transcript:

1 Surface Water (Lakes, streams, ponds, wetlands, etc.)

2  The total area from which a stream draws its water.  The boundaries of the drainage area are called drainage divides  The total area from which a stream draws its water.  The boundaries of the drainage area are called drainage divides Drainage Basin (Watershed)

3 Major North American Drainage Basins & Divides

4 Discharge: 17,500 m 3 /sec

5 Colorado River Drainage Basin Continental Divide

6 Bottom Line: Know your watershed - everything that is in the watershed can end up in the stream. The precipitation, evaporation, and % runoff of the basin will determine how much water is available.

7 Groundwater GW Recharge Area (Infiltration) GW Discharge GW Flow

8 Porosity = The percent void space in a rock or sediment Permeability = The ability of a material to transmit a fluid

9 Unsaturated Zone: Pores include both air and water Saturated Zone: Pores filled with water Groundwater Table Groundwater Recharge

10 Aquifer = A geologic unit capable of storing and transmitting water in sufficient quantities to supply wells Generally not an “underground cave” = A geologic unit capable of storing and transmitting water in sufficient quantities to supply wells Generally not an “underground cave”

11 Groundwater Flow & Discharge

12 U.S. Groundwater Withdrawals: 1950-1995

13 Groundwater Impacts 1.Groundwater depletion 2.Land subsidence 3.Saltwater intrusion

14 Groundwater Use and Supply

15 Groundwater Impacts 1.Groundwater depletion 2.Land subsidence 3.Saltwater intrusion

16 Groundwater Impacts 1.Groundwater depletion 2.Land subsidence 3.Saltwater intrusion Venice, Italy

17 Groundwater Impacts 1.Groundwater depletion 2.Land subsidence 3.Saltwater intrusion San Joaquin Valley, CA

18 The Winter Park Sinkhole, Florida (Photo by Leif Skoogfors)

19 Groundwater Impacts 1.Groundwater depletion 2.Land subsidence 3.Saltwater intrusion

20 Solutions Find More or Use Less

21 Solutions Finding More Water 1.Enhanced Recharge 2.Other Sources Desalination Icebergs 3.Dams Recharge Pond, Long Island

22 Solutions Finding More Water 1.Enhanced Recharge 2.Other Sources Desalination Icebergs 3.Dams Desalination Plant

23 Solutions Finding More Water 1.Enhanced Recharge 2.Other Sources Desalination Icebergs 3.Dams Icebergs

24 Solutions Finding More Water 1.Enhanced Recharge 2.Other Sources Desalination Icebergs 3.Dams Ross Dam, WA

25 Solutions Using Less Water 1.Use Less Water 2.Improved Efficiency Agriculture Home Use 3.Water Reclamation & Reuse

26 Solutions Using Less Water 1.Use Less Water 2.Improved Efficiency Agriculture Home Use 3.Water Reclamation & Reuse Grow Local

27 Solutions Using Less Water 1.Use Less Water 2.Improved Efficiency Agriculture Home Use 3.Water Reclamation & Reuse Drip Irrigation

28 Solutions Using Less Water 1.Use Less Water 2.Improved Efficiency Agriculture Home Use 3.Water Reclamation & Reuse

29 Solutions Using Less Water 1.Use Less Water 2.Improved Efficiency Agriculture Home Use 3.Water Reclamation & Reuse Rooftop Harvesting - King Street Center, Seattle


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