Snake -- Cataloging Unit 10160008

• James Subregion 1016
  
• 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 3975.9 km² ( 1535.8 mi² ) [% in USA = 64.61, % in Region = 55.16]
  The area from the USGS is 1500 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 227)

  IV. Elevation Analysis

  This analysis is based on 1587665 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 455.7 m ( 1495.1 ft ) [% in USA = 53.91, % in Region = 20.97]
  The elevation standard deviation is 47.0 m ( 154.2 ft ) [% in USA = 37.14, % in Region = 24.84]
  The coefficient of variation is 10.3 %.
  The vertical relief is 230.8 m ( 757.2 ft ) [% in USA = 33.59, % in Region = 21.94]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	379.0	404.0	411.0	419.3	438.0	450.0	457.0	472.0	495.7	526.0	609.8
  feet	1243.4	1325.4	1348.4	1375.6	1437.0	1476.4	1499.3	1548.5	1626.3	1725.7	2000.6

  

  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	237.5	147.6	0.060	0.096	39.65	55.48
  Intermittent Shoreline	1011.2	628.5	0.254	0.409	99.81	98.71
  Perennial Streams	53.3	33.1	0.013	0.022	7.91	7.42
  Intermittent Streams	1816.9	1129.2	0.457	0.735	64.42	35.81
  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	109.2	67.9	0.027	0.044	53.24	66.13
  3° roads	141.4	87.8	0.036	0.057	35.72	57.10
  4° roads	4159.2	2585.0	1.046	1.683	40.17	67.74
  Total Roads	4409.8	2740.7	1.109	1.785	36.81	63.87
  Railroads	108.8	67.6	0.027	0.044	36.52	51.61
  Pipes and Powerlines	9.6	6.0	0.002	0.004	13.31	19.03

  
  Of the natural water in this HUC, 90.67% (by length) is intermittent [% in USA = 89.44, % in Region = 88.06]

  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