Lower Illinois-Senachwine Lake -- Cataloging Unit 07130001

• Lower Illinois Subregion 0713
  
• Upper Mississippi Region 07 (There are 131 cataloging units in this region.)
  The state composition by area is 100.0% Illinois.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 5097.9 km² ( 1969.2 mi² ) [% in USA = 78.73, % in Region = 80.15]
  The area from the USGS is 1950 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 1242)

  IV. Elevation Analysis

  This analysis is based on 2036585 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 204.1 m ( 669.6 ft ) [% in USA = 24.77, % in Region = 16.03]
  The elevation standard deviation is 32.1 m ( 105.3 ft ) [% in USA = 23.97, % in Region = 55.73]
  The coefficient of variation is 15.7 %.
  The vertical relief is 170.0 m ( 557.7 ft ) [% in USA = 22.60, % in Region = 51.15]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	134.0	152.8	183.0	196.8	199.0	205.9	213.0	217.3	228.0	243.3	304.0
  feet	439.6	501.3	600.4	645.7	652.9	675.5	698.8	712.9	748.0	798.2	997.4

  

  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	689.1	428.3	0.135	0.217	67.17	54.96
  Intermittent Shoreline	24.0	14.9	0.005	0.008	75.79	83.21
  Perennial Streams	1324.5	823.2	0.260	0.418	50.07	45.80
  Intermittent Streams	2738.3	1701.9	0.537	0.864	73.95	79.39
  Canals	50.3	31.3	0.010	0.016	66.13	59.54
  1° roads	218.5	135.8	0.043	0.069	86.93	87.79
  2° roads	224.0	139.2	0.044	0.071	75.89	77.10
  3° roads	566.7	352.2	0.111	0.179	76.17	77.86
  4° roads	7235.5	4496.9	1.419	2.284	73.28	78.63
  Total Roads	8244.6	5124.1	1.617	2.602	76.13	83.97
  Railroads	707.1	439.5	0.139	0.223	94.17	90.08
  Pipes and Powerlines	148.6	92.3	0.029	0.047	50.02	48.85

  
  Of the natural water in this HUC, 57.84% (by length) is intermittent [% in USA = 58.50, % in Region = 78.63]

  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