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Groundwater-Surface Water Interactions

Groundwater-Surface Water Interactions. What hydrologic role does the meadow play in the greater watershed? How does meadow hydrology reflect watershed processes? What is meadow ET? How does it compare to watershed ET on short (daily) and long (annual) time scales?

nora-webster
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Groundwater-Surface Water Interactions

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  1. Groundwater-Surface Water Interactions • What hydrologic role does the meadow play in the greater watershed? • How does meadow hydrology reflect watershed processes? • What is meadow ET? How does it compare to watershed ET on short (daily) and long (annual) time scales? • How do meadow processes play out in the downstream hydrograph? • How much water moves from the hill slope through the meadow and into the stream? • What is the resiliency of the meadow to perturbations such as drought or changing climate?

  2. Data: Hydrologic data Snow Depth Soil Moisture Stream Flow Gradient

  3. Data: Meadow GW gradient

  4. Data: major ions -- stream August November Spring -> Fall June-July June 1st

  5. Analysis: Mixing diagrams* w/ selected endmembers, stream samples Spring → Fall (*EMMA and PCA using 4 conservative species)

  6. Analysis: Mixing diagrams w/ selected endmembers, stream & saprollite wells Spring → Fall

  7. Analysis: Mixing diagrams w/ selected endmembers, stream, saprock wells & edge wells Spring → Fall

  8. Analysis: Mixing diagrams w/ selected endmembers, stream, saprock wells, edge wells & center wells Spring → Fall

  9. Eddy Correlation in Long Meadow

  10. Holbrook et al. (2014)

  11. Data: major ions -- meadow Meadow center wells Meadow edge wells (Stream)

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