South Skunk -- Cataloging Unit 07080105

• 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 100.0% Iowa.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 4867.0 km² ( 1879.9 mi² ) [% in USA = 76.31, % in Region = 76.34]
  The area from the USGS is 1840 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 660)

  IV. Elevation Analysis

  This analysis is based on 1943708 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 291.5 m ( 956.4 ft ) [% in USA = 37.99, % in Region = 48.85]
  The elevation standard deviation is 39.2 m ( 128.6 ft ) [% in USA = 30.98, % in Region = 71.76]
  The coefficient of variation is 13.4 %.
  The vertical relief is 188.3 m ( 617.8 ft ) [% in USA = 26.43, % in Region = 60.31]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	193.6	240.1	255.3	268.5	278.3	291.1	305.0	313.9	326.9	344.0	381.9
  feet	635.2	787.7	837.6	880.9	913.0	955.0	1000.6	1029.8	1072.5	1128.6	1252.9

  

  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	287.5	178.7	0.059	0.095	39.37	23.66
  Intermittent Shoreline	12.9	8.0	0.003	0.004	68.64	73.28
  Perennial Streams	1360.9	845.8	0.280	0.450	53.43	55.73
  Intermittent Streams	2124.2	1320.2	0.436	0.702	62.53	64.89
  Canals	111.6	69.4	0.023	0.037	75.18	74.81
  1° roads	184.6	114.7	0.038	0.061	84.98	85.50
  2° roads	197.1	122.5	0.041	0.065	71.77	70.99
  3° roads	277.2	172.3	0.057	0.092	52.49	16.79
  4° roads	6340.2	3940.5	1.303	2.096	64.52	61.07
  Total Roads	6999.1	4350.0	1.438	2.314	64.61	60.31
  Railroads	316.4	196.6	0.065	0.105	70.49	49.62
  Pipes and Powerlines	109.5	68.1	0.023	0.036	41.35	35.88

  
  Of the natural water in this HUC, 56.45% (by length) is intermittent [% in USA = 56.99, % in Region = 74.81]

  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