Flint-Henderson -- Cataloging Unit 07080104

• Upper Mississippi-Skunk-Wapsipinicon Accounting Unit 070801
  
• Upper Mississippi-Iowa-Skunk-Wapsipinicon Subregion 0708
  
• Upper Mississippi Region 07 (There are 131 cataloging units in this region.)
  The state composition by area is 73.3% Illinois, 26.7% Iowa.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 6233.5 km² ( 2407.8 mi² ) [% in USA = 88.11, % in Region = 93.89]
  The area from the USGS is 2350 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 1491)

  IV. Elevation Analysis

  This analysis is based on 2489560 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 207.6 m ( 681.1 ft ) [% in USA = 25.20, % in Region = 19.08]
  The elevation standard deviation is 25.1 m ( 82.3 ft ) [% in USA = 16.01, % in Region = 32.06]
  The coefficient of variation is 12.1 %.
  The vertical relief is 119.0 m ( 390.4 ft ) [% in USA = 12.17, % in Region = 14.50]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	146.0	166.0	183.0	198.0	204.0	213.0	215.1	226.5	229.1	237.2	265.0
  feet	479.0	544.6	600.4	649.6	669.3	698.8	705.7	743.1	751.6	778.2	869.4

  

  V. Map Line Analysis

  Note- percentiles are for the feature density, not for the raw total lengths.
  

  line type	km	mi	km/km²	mi/mi²	% in USA	% in Region
  Perennial Shoreline	994.4	618.0	0.160	0.257	74.09	61.83
  Intermittent Shoreline	4.5	2.8	0.001	0.001	49.41	48.09
  Perennial Streams	1656.6	1029.6	0.266	0.428	51.44	48.09
  Intermittent Streams	3144.1	1954.1	0.504	0.812	69.82	74.05
  Canals	12.5	7.8	0.002	0.003	50.59	38.17
  1° roads	107.8	67.0	0.017	0.028	65.94	57.25
  2° roads	286.4	178.0	0.046	0.074	77.93	80.15
  3° roads	543.2	337.6	0.087	0.140	68.21	58.02
  4° roads	8311.2	5165.4	1.333	2.145	67.22	64.12
  Total Roads	9248.6	5748.0	1.484	2.387	67.55	65.65
  Railroads	676.9	420.7	0.109	0.175	89.63	78.63
  Pipes and Powerlines	178.0	110.6	0.029	0.046	49.27	47.33

  
  Of the natural water in this HUC, 54.29% (by length) is intermittent [% in USA = 54.95, % in Region = 67.18]

  VI. Other sites

  • EPA- Surf Your Watershed - Index of Watershed Indicators
  • USGS- Science in Your Watershed - Selected Realtime Streamflow Stations
  • CTIC- Known Your Watershed

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  1999 SEPT 4, Last updated on 2003 JAN 23
  
  D.L. Gustafson, dlg@rapid.msu.montana.edu