Lower Iowa -- Cataloging Unit 07080209

• 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 100.0% Iowa.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 4379.8 km² ( 1691.8 mi² ) [% in USA = 70.25, % in Region = 67.94]
  The area from the USGS is 1670 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 593)

  IV. Elevation Analysis

  This analysis is based on 1748440 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 229.5 m ( 752.9 ft ) [% in USA = 28.52, % in Region = 29.77]
  The elevation standard deviation is 31.2 m ( 102.4 ft ) [% in USA = 22.74, % in Region = 51.91]
  The coefficient of variation is 13.6 %.
  The vertical relief is 151.0 m ( 495.4 ft ) [% in USA = 18.33, % in Region = 35.11]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	161.0	183.0	201.2	213.0	225.0	229.0	238.1	244.0	258.3	272.7	312.0
  feet	528.2	600.4	660.1	698.8	738.2	751.3	781.2	800.5	847.4	894.7	1023.6

  

  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	377.2	234.4	0.086	0.139	50.40	34.35
  Intermittent Shoreline	0.0	0.0	0.000	0.000	26.95	18.32
  Perennial Streams	993.1	617.2	0.227	0.365	44.67	24.43
  Intermittent Streams	2369.0	1472.3	0.541	0.870	74.28	80.15
  Canals	12.5	7.8	0.003	0.005	53.67	40.46
  1° roads	149.4	92.8	0.034	0.055	82.71	82.44
  2° roads	121.9	75.8	0.028	0.045	53.58	39.69
  3° roads	302.9	188.3	0.069	0.111	60.11	34.35
  4° roads	5542.3	3444.6	1.265	2.036	60.92	54.96
  Total Roads	6116.5	3801.5	1.397	2.247	61.06	54.96
  Railroads	177.1	110.0	0.040	0.065	49.93	18.32
  Pipes and Powerlines	189.6	117.9	0.043	0.070	64.85	81.68

  
  Of the natural water in this HUC, 63.35% (by length) is intermittent [% in USA = 63.90, % in Region = 92.37]

  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