September 2004

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• September 2004
• Seelbach / Wiley presentation to Groundwater
  Council
• Objective Update status of tools and development
• Statewide NHD stream data framework
• Streamflow as measuring straw for
• aquifer health of each upstream catchment
• Latest statewide statistical streamflow and
• water budget models
• Linkages between baseflows and
• stream fishes
• Basis for framework/tool for
• comprehensive state water/gw mngmt

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• 2 large, cooperative regional river studies
  building a
• land-water data framework for hydrologic analyses
  in Michigan
• and neighbor states
• USGS Great Lakes Aquatic GAP analysis
• EPA-STAR IL-WI-MI Riverine assessment and risk
  analysis

NHD is database framework Pre-packaged hydrologic
expectations A clickable map
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NHD streams and nodes 1100,000 scale
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Upstream catchments and buffers for every
downstream node ..then catchment summary data
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Complete coverage for all nodes (reaches),
statewide
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COMBINE MULTIPLE REACHES INTO HYDROLOGIC /
ECOLOGIC SEGMENTS From 50,000 (splitters) down
to 5,000 (lumpers) data rows
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streamflow is the key measure for water
conditions in entire upstream catchment !
excellent index for condition of streams,
wetlands, and lakes and groundwater !
P
DRAINAGE STRAW
Q
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Statewide flow modeling / estimation History
USGS, MDNR, UM Bent 1970 Holtschlag and Croskey
1980 Seelbach and Wiley 1990 Hinz et al.
2000 Hinz et al. 2004
Flow Drainage area (P) Slope Texture Landuse
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Catchment surfical geology
Catchment slope
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Water budgets Q/P at gages will model these in
addition to flow yields
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FLOW DURATION CURVES !
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For every reach and segment- Expected or
reference synthetic flow duration curve with
error bounds based on landscape character
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Normal probability distribution or Bellshaped
curve
TARGET
1 SD
2 SD
3 SD
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For every reach and segment- Expected or
reference synthetic flow duration curve with
error bounds based on landscape character
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Linkages between groundwater And stream fishes
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For every reach and segment- Expected or
reference synthetic flow duration curve with
error bounds Also based on fish targets
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Can use stastical stream flow targets, esp.
baseflow targets for specific catchments, to
relate all water management alternatives (incl
withdrawals) to statistical thresholds related
to landscape-based flow and fish
potentials groundwater dependent natural
resources trout streams or fens
first come to mind but in reality all surface
water systems to some degree Within 1 year will
have complete map and data framework for
Michigan, as well as models and estimates per
reach and segment Also doing Wisconsin,
Illinois parallel work in Ontario, New York
Momentum in Minnesota, Indiana, Ohio
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NHD streams and nodes 1100,000 scale
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Surficial geology (texture)