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Some Basic Hydrologic Concepts

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... by hardpan or bedrock before entering groundwater pool ... Precipitation entering water table. Research results come from experimental watersheds such as: ... – PowerPoint PPT presentation

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Title: Some Basic Hydrologic Concepts


1
Some Basic Hydrologic Concepts
Weir are used to measure volume of water flowing
past a point.
2
What Happens to Precipitation?
  • Hydrologic cycle
  • P RO ET S,
  • Where,
  • P precipitation
  • RO runoff
  • ET evapotranspiration
  • S storage

3
Components of Vaporization
Chang, p. 169, Munich Germany
4
Evapotranspiration
  • Loss of water from a given area during a
    specified time by evaporation from the soil
    surface and by transpiration from the plants.
  • Supports plant life
  • Reduces water yield

5
Runoff Provides Major Benefits
  • RO P ET

Moose Creek, Clearfield County, PA (WLH)
6
Where does runoff go to?
  • RO CI SRO SSF BF,
  • where,
  • CI channel interception
  • SRO surface run off
  • SSF subsurface flow
  • BF base flow

7
Where does runoff go to?
  • CI channel interception
  • Precipitation falling directly into channel

Susquehanna River, Clearfield, PA, (WLH)
8
Where does runoff go to?
  • SRO surface runoff or overland flow
  • Precipitation not infiltrating soil

Source http//www.agric.gov.ab.ca/agdex/500/72000
003.html
Sheet erosion of cropland resulting from surface
runoff
9
Where does runoff go to?
  • SSF subsurface flow, or interflow
  • Infiltrating precipitation intercepted by hardpan
    or bedrock before entering groundwater pool

10
Where does runoff go to?
  • BF base flow or ground water flow
  • Precipitation entering water table

11
Research results come from experimental
watersheds such as
12
What Well Look At
  • Erosion
  • Impacts of
  • Roads
  • Harvests
  • Water flows
  • Storm events
  • Storage
  • Water yield
  • Amount
  • Timing

Montgemory Reservoir, Clearfield, PA, WLH
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