Little Sioux -- Cataloging Unit 10230003

• Missouri-Little Sioux Subregion 1023
  
• Missouri Region 10 (There are 310 cataloging units in this region.)
  The state composition by area is 88.2% Iowa, 11.8% Minnesota.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 7307.3 km² ( 2822.6 mi² ) [% in USA = 93.32, % in Region = 87.74]
  The area from the USGS is 2800 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 804)

  IV. Elevation Analysis

  This analysis is based on 2919377 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 429.6 m ( 1409.4 ft ) [% in USA = 52.34, % in Region = 17.74]
  The elevation standard deviation is 33.9 m ( 111.2 ft ) [% in USA = 25.63, % in Region = 11.29]
  The coefficient of variation is 7.9 %.
  The vertical relief is 212.3 m ( 696.5 ft ) [% in USA = 30.51, % in Region = 19.03]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	313.0	387.0	410.6	420.8	427.0	433.2	441.4	445.0	457.0	467.0	525.3
  feet	1026.9	1269.7	1347.1	1380.6	1400.9	1421.2	1448.1	1460.0	1499.3	1532.1	1723.4

  

  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	552.3	343.2	0.076	0.122	46.57	65.48
  Intermittent Shoreline	35.8	22.3	0.005	0.008	76.36	55.81
  Perennial Streams	1770.6	1100.4	0.242	0.390	46.94	76.13
  Intermittent Streams	3217.2	1999.5	0.440	0.708	62.86	32.58
  Canals	140.5	87.3	0.019	0.031	73.09	72.90
  1° roads	41.8	26.0	0.006	0.009	49.55	64.52
  2° roads	281.2	174.8	0.038	0.062	68.92	81.61
  3° roads	352.6	219.1	0.048	0.078	45.10	68.39
  4° roads	9014.5	5602.5	1.234	1.985	57.08	85.48
  Total Roads	9690.1	6022.4	1.326	2.134	53.86	82.26
  Railroads	322.0	200.1	0.044	0.071	53.10	73.23
  Pipes and Powerlines	498.3	309.7	0.068	0.110	83.56	95.16

  
  Of the natural water in this HUC, 58.34% (by length) is intermittent [% in USA = 59.12, % in Region = 24.84]

  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