South Fork Sangamon -- Cataloging Unit 07130007

• 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 3028.3 km² ( 1169.7 mi² ) [% in USA = 47.18, % in Region = 41.22]
  The area from the USGS is 1130 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 595)

  IV. Elevation Analysis

  This analysis is based on 1208997 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 189.7 m ( 622.4 ft ) [% in USA = 23.31, % in Region = 10.69]
  The elevation standard deviation is 10.7 m ( 35.1 ft ) [% in USA = 5.07, % in Region = 0.76]
  The coefficient of variation is 5.6 %.
  The vertical relief is 66.0 m ( 216.5 ft ) [% in USA = 5.40, % in Region = 0.76]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	163.0	176.0	183.0	183.0	186.0	189.9	191.0	194.0	198.0	203.7	229.0
  feet	534.8	577.4	600.4	600.4	610.2	623.0	626.6	636.5	649.6	668.3	751.3

  

  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	389.5	242.1	0.129	0.207	65.09	51.15
  Intermittent Shoreline	0.8	0.5	0.000	0.000	38.09	31.30
  Perennial Streams	740.8	460.4	0.245	0.394	47.32	36.64
  Intermittent Streams	1036.6	644.2	0.342	0.551	50.07	44.27
  Canals	12.9	8.0	0.004	0.007	56.75	45.80
  1° roads	90.1	56.0	0.030	0.048	79.44	77.10
  2° roads	39.9	24.8	0.013	0.021	31.88	12.21
  3° roads	223.6	139.0	0.074	0.119	62.25	40.46
  4° roads	4870.5	3027.0	1.608	2.588	83.75	90.84
  Total Roads	5224.2	3246.8	1.725	2.776	81.53	88.55
  Railroads	447.8	278.3	0.148	0.238	95.26	92.37
  Pipes and Powerlines	208.4	129.5	0.069	0.111	84.08	96.18

  
  Of the natural water in this HUC, 47.86% (by length) is intermittent [% in USA = 49.79, % in Region = 50.38]

  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