Lower Lake Oahe -- Cataloging Unit 10130105

• Lake Oahe Accounting Unit 101301
  
• Missouri-Oahe Subregion 1013
  
• Missouri Region 10 (There are 310 cataloging units in this region.)
  The state composition by area is 100.0% South Dakota.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 9182.4 km² ( 3546.9 mi² ) [% in USA = 97.44, % in Region = 95.16]
  The area from the USGS is 3570 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 712)

  IV. Elevation Analysis

  This analysis is based on 3666748 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 575.4 m ( 1887.8 ft ) [% in USA = 59.97, % in Region = 30.65]
  The elevation standard deviation is 50.6 m ( 166.0 ft ) [% in USA = 39.32, % in Region = 28.71]
  The coefficient of variation is 8.8 %.
  The vertical relief is 305.0 m ( 1000.6 ft ) [% in USA = 41.83, % in Region = 36.13]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	457.0	499.2	533.9	549.0	560.0	576.8	580.7	602.0	611.6	640.0	762.0
  feet	1499.3	1637.8	1751.6	1801.2	1837.2	1892.4	1905.2	1975.0	2006.5	2099.7	2500.0

  

  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	2035.6	1265.2	0.222	0.357	83.28	96.45
  Intermittent Shoreline	239.7	149.0	0.026	0.042	93.84	86.77
  Perennial Streams	200.9	124.9	0.022	0.035	10.00	10.97
  Intermittent Streams	6079.0	3778.1	0.662	1.065	85.27	65.48
  Canals	0.0	0.0	0.000	0.000	35.62	43.55
  1° roads	0.0	0.0	0.000	0.000	30.84	48.39
  2° roads	174.3	108.3	0.019	0.031	40.79	48.71
  3° roads	279.6	173.8	0.030	0.049	31.41	49.68
  4° roads	5633.2	3501.0	0.613	0.987	12.08	18.39
  Total Roads	6087.1	3783.1	0.663	1.067	12.60	19.03
  Railroads	57.2	35.6	0.006	0.010	17.95	20.97
  Pipes and Powerlines	163.0	101.3	0.018	0.029	35.29	50.00

  
  Of the natural water in this HUC, 73.86% (by length) is intermittent [% in USA = 73.42, % in Region = 47.74]

  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