Blackbird-Soldier -- Cataloging Unit 10230001

• Missouri-Little Sioux Subregion 1023
  
• Missouri Region 10 (There are 310 cataloging units in this region.)
  The state composition by area is 52.2% Iowa, 47.7% Nebraska, 0.1% South Dakota.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 4161.4 km² ( 1607.4 mi² ) [% in USA = 67.31, % in Region = 58.39]
  The area from the USGS is 1500 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 548)

  IV. Elevation Analysis

  This analysis is based on 1662187 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 370.2 m ( 1214.6 ft ) [% in USA = 47.51, % in Region = 12.90]
  The elevation standard deviation is 44.8 m ( 147.0 ft ) [% in USA = 35.77, % in Region = 23.87]
  The coefficient of variation is 12.1 %.
  The vertical relief is 176.0 m ( 577.4 ft ) [% in USA = 24.02, % in Region = 11.29]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	305.0	314.0	320.4	329.0	350.1	375.9	389.6	402.0	413.1	427.1	481.0
  feet	1000.6	1030.2	1051.2	1079.4	1148.6	1233.3	1278.2	1318.9	1355.3	1401.2	1578.1

  

  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	672.2	417.8	0.162	0.260	74.37	91.94
  Intermittent Shoreline	23.5	14.6	0.006	0.009	78.40	59.35
  Perennial Streams	850.8	528.8	0.204	0.329	40.69	68.06
  Intermittent Streams	1216.3	756.0	0.292	0.470	43.72	15.48
  Canals	248.5	154.4	0.060	0.096	87.12	89.03
  1° roads	141.3	87.8	0.034	0.055	82.57	94.52
  2° roads	186.9	116.1	0.045	0.072	76.60	87.74
  3° roads	211.8	131.6	0.051	0.082	46.99	71.29
  4° roads	5494.7	3415.0	1.320	2.125	66.04	93.55
  Total Roads	6034.7	3750.6	1.450	2.333	65.75	93.87
  Railroads	221.4	137.6	0.053	0.086	61.44	80.00
  Pipes and Powerlines	287.4	178.6	0.069	0.111	84.18	95.81

  
  Of the natural water in this HUC, 44.87% (by length) is intermittent [% in USA = 47.32, % in Region = 12.58]

  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