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| Precip average for the CO |
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| Largest river in the state is |
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| Important in Washington, Oregon |
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| Thunderstorms, hurricanes |
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Precip rate
Texture
Vegetation
Antecedent Moisture |
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Term
| If infiltration Decreases with time |
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Definition
Soil moisture is increased
Soil Tension is decreased |
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Clayey soil
No veg
Infil LOW
Runoff HIGH |
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| Permiable (Kentucky Blue Grass) |
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Definition
Sandy Soil
Forest Cover
Infil HIGH
Runoff LOW |
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Time to peak is SHORT
reach Discharge is HIGH |
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Time to peak is long
Reach Discharge is LOWER |
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Water Repellant layers
Few CM thick,
Porduced by organic matter
REDUCES INFILTRATION CAPACITY
(excess runoff) |
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Biggest flood in CO history
Caused by summer thunderstorms |
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| Has more rain and is getting less snow |
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Built in 1930s
Orginally called Boulder Dam
has hydropower generation |
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| Small, limited storage of water but doesn't disrupt the flow |
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| Built primaraly to run small mills, water wheel power for mills |
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| Removing b/c power no longer needed and limits access to fish habbitat |
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| Built for storage, larger dams and reserviors |
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| Built from 1937-41, purpose was hydro ecectricity for aluminum |
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| Groundwater account for what % of water withdrawal?? |
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| The only source of water and very important as a source of clean water |
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Definition
| Head/Distance (H/X) Slope |
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Definition
Function of size of pores
1. Course sediment = High K
2. Silt/clay sediment = Low K |
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| Sustains flow in the stream inbetween rainstorms |
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| Stream water supplied to aquifer = recharged |
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| If withdrawls > recharge then?? |
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Evapotransporation
Irrigation |
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| Recharge occurs thru Seepage, river supplies as irrigation water |
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Sands and Gravel deposited
approx 15 million years ago by braded rivers |
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| Ogallala is thickest and thinest in |
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Definition
Thickest in NE
Thinest in OK,TX |
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| Subsidence and California |
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Definition
| 20-30 feet of subsidence in san joaquin valley |
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Definition
Algal Blooms = eutraphification
Draws oxygen out of water, not good for fish |
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Definition
| Attached to soil particles and enter streams thru soil erosion |
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| From coal powerplants creates sulfuric acid |
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| why is acid precip a problem in the NE U.S. and Canada? |
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Definition
| Soils reflect cation exchange |
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Definition
| River carries water (q) and Sediment discharge |
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| Is a function of Precip and Runoff |
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| Function of Topy, climate, veg, rock type |
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| Driving force function of slope depth |
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| Silt and Sand that is suspended in the flow |
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| Gravel and Boulders that move along the bed |
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Fg (downward) Weight
Fd (Eastward) Drag
Fc (Upward) lift force |
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| What two forces make particles move |
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Definition
| Lift force and drag force |
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| It takes a greater force to move... |
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Definition
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increases with Q, not linear
large change in q = small change in T |
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Narrow and deep, Low sed load
Consists of silt and clay |
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| Resistant to erosion, can withstand forces of flow |
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| sediment size Decrease downstream |
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| Decrease downstream due to weathering and little rocks out run big rocks |
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