irwin prairie gw flow regime and drainage pp
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Jared RogersIRWIN PRAIRIE
GROUNDWATER FLOW REGIME AND
DRAINAGE
World groundwater supply = .61% (Fetter 2001)Groundwater accounts for >98% of available fresh water globally
Relationship to wetlandsWater filtration and storageNutrient cycling and transport retentionFlood attenuation
Better knowledge = Better management
INTRODUCTION: HYDROLOGY SIGNIFICANCE
Irwin Prairie State Nature PreserveSeasonal wetland
Sub-ecotoneswet prairieSedge meadow Swamp forest
Peat layer (confining unit)Unconfined sand aquiferClay aquitard beneath
INTRODUCTION: SITE DESCRIPTION
Photo by: Dr. Todd Crail 12/1/2011
Wet Period
Standing Water
Measure heads in piezometers and the wetland
Determine Surface-water and groundwater interactions
Recharge and dischargePlot potentiometric map to determine GW
flow directions
OBJECTIVE
Standing Water?
METHODSBancroft Avenue
Irwin
Roa
d
Dorr Street
Installationby Kirk Zmijewski
METHODS
ELECTRONIC SOUNDING TAPE
Wee
kly
Prec
ipita
tion
(inch
es)
From wunderground.com (2013)00.5
11.5
22.5
33.5
44.5
Precipitation
Date
Wetland bottom elevation Pole-E
RESULTS
668
667
666
665
664
Sept. 15, 2013ft. amsl
Weekly measurementsDrawdown rate
B-North and Pole W too far
DISCUSSION
GW flow directionDivergent and convergent flow
GW and surface-water interactionGW discharges to the wetland Wetland recharges GW in Sept.
CONCLUSION
Dr. James Martin-HaydenDr. Todd CrailMr. Kirk ZmijewskiMr. Ryan Schroeder
Ohio Department of Natural Areas and Preserves
ACKNOWLEDGEMENTS
Fetter, C.W. Applied Hydrogeology 4 th Ed. New Jersey: Prentice-Hall, Inc. 2001. Text.
REFERENCES
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