Shell Rock -- Cataloging Unit 07080202

• Iowa Accounting Unit 070802
  
• 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 78.0% Iowa, 22.0% Minnesota.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 2779.3 km² ( 1073.6 mi² ) [% in USA = 41.92, % in Region = 31.30]
  The area from the USGS is 1060 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 317)

  IV. Elevation Analysis

  This analysis is based on 1110810 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 344.7 m ( 1130.9 ft ) [% in USA = 44.01, % in Region = 68.70]
  The elevation standard deviation is 34.8 m ( 114.2 ft ) [% in USA = 26.48, % in Region = 60.31]
  The coefficient of variation is 10.1 %.
  The vertical relief is 150.0 m ( 492.1 ft ) [% in USA = 18.10, % in Region = 34.35]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	261.0	299.0	307.1	320.0	332.0	348.0	361.8	372.0	381.0	388.4	411.0
  feet	856.3	981.0	1007.5	1049.9	1089.2	1141.7	1187.0	1220.5	1250.0	1274.3	1348.4

  

  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	245.2	152.4	0.088	0.142	51.54	36.64
  Intermittent Shoreline	7.4	4.6	0.003	0.004	68.55	71.76
  Perennial Streams	583.3	362.5	0.210	0.338	41.45	19.08
  Intermittent Streams	1053.7	654.9	0.379	0.610	55.38	53.44
  Canals	163.6	101.7	0.059	0.095	86.93	88.55
  1° roads	93.5	58.1	0.034	0.054	82.19	81.68
  2° roads	86.9	54.0	0.031	0.050	58.98	48.09
  3° roads	174.3	108.3	0.063	0.101	56.70	28.24
  4° roads	3780.9	2349.8	1.360	2.189	69.30	68.70
  Total Roads	4135.6	2570.3	1.488	2.394	67.74	66.41
  Railroads	300.8	187.0	0.108	0.174	89.53	77.86
  Pipes and Powerlines	93.4	58.0	0.034	0.054	55.19	61.83

  
  Of the natural water in this HUC, 56.15% (by length) is intermittent [% in USA = 56.51, % in Region = 73.28]

  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