16 Water BudgetCompares the input (water you get) and output (water you use) of water in a specific region.
17 Water Budget Controlled by many different climate factors Air temperatureHumidity (Season Extremes)Rainfall amountSoil Type
18 A water budget has 4 parts: usage, recharge, surplus, and deficit Water Budget GraphsA comparison between Moisture supply (precip) and Moisture demand (evap)A water budget has 4 parts: usage, recharge, surplus, and deficit
19 Water Budget GraphsUsage – When plants, humans, sun is taking water out of the system.Recharge - When the ground water is being filled back up
20 Water Budget GraphsSurplus - Rainfall is greater than the need. Soil is moist.Deficit - Need for moisture is greater than the rainfall coming into the system. Soil is dry
27 Water TableGround becomes saturated with water. This is the ground water that we have been talking about.Water Table – The top portion of the “zone of groundwater saturation”
28 Water TableZone of Aeration – Water and air mixed with the rocks and soilCapillary fringe – Border between air/water and just water. Right above the water table (pg. 154)Zone of Saturation – Just water in the soil and no air
29 Wells and SpringsOrdinary well - A hole dug or drilled down below the water table. ( water must be pumped out)Spring - Place where the water table is at the surface.Artesian well - A well that is pressurized. (water will not have to be pumped out)