ottawa county water resources study – phase-2...ottawa county 10 th annual water quality forum –...
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Ottawa County 10th Annual Water Quality Forum – Nov. 13, 2015
Ottawa County Water Resources Study – Phase-2
Status Update
David P. Lusch, Ph.D.Department of Geography
andInstitute of Water ResearchMichigan State University
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Ottawa County 10th Annual Water Quality Forum – Nov. 13, 2015
Ottawa County Water Resources Study – Phase-2 Current and Recent Activities
Statewide Groundwater Quality Assessment
Streamflow Measurements
PAWS Modeling
IGW Modeling
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Ottawa County 10th Annual Water Quality Forum – Nov. 13, 2015
Ottawa County Water Resources Study – Phase-2 Statewide Groundwater Quality Assessment
Basic assessments are finished
Developing a risk ranking scheme is in progress
Final report is in progress
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Ottawa County 10th Annual Water Quality Forum – Nov. 13, 2015
Ottawa County Water Resources Study – Phase-2 Statewide Groundwater Quality Assessment
Chloride Concentration (mg/L) Geocoded WaterChem
water quality data from MDEQ
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Ottawa County 10th Annual Water Quality Forum – Nov. 13, 2015
Ottawa County Water Resources Study – Phase-2 Statewide Groundwater Quality Assessment
Secondary MCL =250 mg/L
MDEQ WaterChem data interpolated at 3000 x 3000 m cell size
ChlorideConcentration
(mg/L)
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Ottawa County 10th Annual Water Quality Forum – Nov. 13, 2015
Ottawa County Water Resources Study – Phase-2 Statewide Groundwater Quality Assessment Focused on 17 counties in the Lower Peninsula
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Ottawa County 10th Annual Water Quality Forum – Nov. 13, 2015
Ottawa County Water Resources Study – Phase-2 Statewide Groundwater Quality Assessment
MDEQ WaterChem data interpolated at 1000 x 1000 m cell size
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Ottawa County 10th Annual Water Quality Forum – Nov. 13, 2015
Ottawa County Water Resources Study – Phase-2 Streamflow Measurements Conducted from July 22 – 31, 2015
139 potential sites were field inspected
18 stream segments had no flow (dry)
33 stream segments > 1.5 m wide had flow 22 were measured with Acoustic Doppler Current Profiler
11 were measured with an electromagnetic current meter
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Ottawa County 10th Annual Water Quality Forum – Nov. 13, 2015
Ottawa County Water Resources Study – Phase-2 Streamflow Measurements 139 potential sites field inspected – 51 measured
Model domainboundary
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Ottawa County 10th Annual Water Quality Forum – Nov. 13, 2015
Ottawa County Water Resources Study – Phase-2 Streamflow Measurements RiverSurveyor M9 Acoustic Doppler Current Profiler
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Ottawa County 10th Annual Water Quality Forum – Nov. 13, 2015
Ottawa County Water Resources Study – Phase-2 Streamflow Measurements Ott MF Pro electromagnetic current meter
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Ottawa County 10th Annual Water Quality Forum – Nov. 13, 2015
Ottawa County Water Resources Study – Phase-2
Key processes modeled in PAWS. T: transpiration, P: precipitation, EO: evaporation from overland flow/stream, Eg: evaporation from bare soil; ED: evaporation from depression storage; I: infiltration; R: Recharge.
PAWS (Process-based Adaptive Watershed Simulator) modeling Course resolution (1000 m cells) version compiled
and preliminary products produced
Fine resolution (300 m cells) version compiled and being calibrated
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Ottawa County 10th Annual Water Quality Forum – Nov. 13, 2015
Ottawa County Water Resources Study – Phase-2 PAWS model output – 5 year average ET
5 yr AverageET (mm)
357 - 500500 - 550550 – 600600 – 700700 – 800800 – 900> 900
2013 Cropland Data Layer (USDA)Light & medium blue = water; Gray = Urban; Light green = Broadleaf forest; all other colors = cropland.
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Ottawa County 10th Annual Water Quality Forum – Nov. 13, 2015
Ottawa County Water Resources Study – Phase-2 PAWS model output – 5 year average recharge
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Ottawa County 10th Annual Water Quality Forum – Nov. 13, 2015
Ottawa County Water Resources Study – Phase-2 PAWS model output – 5 year average recharge
Recharge area
Recharge area
Ottawa Water Resources Study – Phase 1
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Ottawa County 10th Annual Water Quality Forum – Nov. 13, 2015
Ottawa County Water Resources Study – Phase-2 IGW modeling 4-layer conceptual model developed and preliminary
calibration completed Layers 1 and 2 represent the glacial sediments
Clay
Sand Kraster
Bedrock top
Surface from DEM
Lake MI
(constantHead)
Kx
Kx / Kz
Kx Kx / Kz
= 100 ft/d= 1
= 0.1 ft/d
= 104Kx / Kz
= 25
Layer
1
2
Sand vs. clay zones delineated from TP analysis of Wellogic lithologies
User-definedtransition
West East
Precomputed glacial K raster from MDEQ project
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Ottawa County 10th Annual Water Quality Forum – Nov. 13, 2015
Ottawa County Water Resources Study – Phase-2 IGW modeling Layers 3 and 4 represent the bedrock units
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60 ft KaveKaveKmarsh
Klow Klowvariablethickness
Layer
3
4 KlowKave
Kmarsh
variablethickness
variablethickness
60 ftMarshall
top
Coldwater top
ColdwaterSub-crop
Marshall60 ft thick
Marshall120 ft thick
MichiganSub-crop
Michigan 60 ft thick
West
Bedrock top
MarshallSub-crop
Klow = 0.01 ft/dKmarsh = 5 ft/dKave = 2.5 ft/d
(Kx /Kz = 11 in all cells) East
Interpolated from Wellogic data
Coldwater shale
Coldwater shale
Michigan Formation
Coldwater top
No-flow boundary
No-flow boundary
No-flow boundary
No-flow boundary
Marshallsandstone
Marshallsandstone
Ottawa County 10th Annual Water Quality Forum – Nov. 13, 2015
Ottawa County Water Resources Study – Phase-2
Status Update
David P. Lusch, Ph.D.Department of Geography
andInstitute of Water ResearchMichigan State University
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