Cahokia-Joachim -- Cataloging Unit 07140101

• Upper Mississippi-Meramec Accounting Unit 071401
  
• Upper Mississippi-Kaskaskia-Meramec Subregion 0714
  
• Upper Mississippi Region 07 (There are 131 cataloging units in this region.)
  The state composition by area is 51.9% Illinois, 48.1% Missouri.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 4273.4 km² ( 1650.7 mi² ) [% in USA = 68.92, % in Region = 65.65]
  The area from the USGS is 1650 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 2414)

  IV. Elevation Analysis

  This analysis is based on 1708158 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 166.5 m ( 546.3 ft ) [% in USA = 21.22, % in Region = 4.58]
  The elevation standard deviation is 38.6 m ( 126.6 ft ) [% in USA = 30.55, % in Region = 70.23]
  The coefficient of variation is 23.2 %.
  The vertical relief is 238.3 m ( 781.8 ft ) [% in USA = 34.58, % in Region = 80.15]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	102.4	120.7	127.0	144.6	152.0	160.9	174.4	183.0	198.0	213.4	340.7
  feet	336.0	396.0	416.7	474.4	498.7	527.9	572.2	600.4	649.6	700.1	1117.8

  

  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	799.0	496.6	0.187	0.301	78.78	65.65
  Intermittent Shoreline	2.8	1.7	0.001	0.001	47.84	45.04
  Perennial Streams	1067.4	663.4	0.250	0.402	48.41	41.22
  Intermittent Streams	1775.7	1103.6	0.416	0.669	59.73	61.07
  Canals	47.8	29.7	0.011	0.018	67.50	64.89
  1° roads	553.1	343.8	0.129	0.208	97.82	97.71
  2° roads	123.9	77.0	0.029	0.047	55.23	43.51
  3° roads	731.8	454.8	0.171	0.276	88.54	87.02
  4° roads	12254.0	7615.9	2.867	4.614	97.21	97.71
  Total Roads	13662.8	8491.5	3.197	5.144	97.30	97.71
  Railroads	1016.8	632.0	0.238	0.383	98.82	97.71
  Pipes and Powerlines	169.8	105.6	0.040	0.064	61.06	75.57

  
  Of the natural water in this HUC, 48.80% (by length) is intermittent [% in USA = 50.69, % in Region = 54.96]

  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