Big Sandy -- Cataloging Unit 14040104

• Upper Green Accounting Unit 140401
  
• Great Divide - Upper Green Subregion 1404
  
• Upper Colorado Region 14 (There are 62 cataloging units in this region.)
  The state composition by area is 100.0% Wyoming.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 4731.9 km² ( 1827.8 mi² ) [% in USA = 74.51, % in Region = 54.84]
  The area from the USGS is 1810 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 353)

  IV. Elevation Analysis

  This analysis is based on 1890088 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 2186.4 m ( 7173.1 ft ) [% in USA = 96.40, % in Region = 59.68]
  The elevation standard deviation is 238.4 m ( 782.1 ft ) [% in USA = 75.89, % in Region = 24.19]
  The coefficient of variation is 10.9 %.
  The vertical relief is 2105.0 m ( 6906.1 ft ) [% in USA = 89.82, % in Region = 51.61]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	1913.5	2013.4	2042.0	2072.0	2100.2	2133.0	2158.2	2194.0	2254.8	2354.1	4018.5
  feet	6277.8	6605.6	6699.4	6797.8	6890.3	6997.9	7080.6	7198.1	7397.5	7723.3	13183.9

  

  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	130.9	81.3	0.028	0.044	24.68	45.16
  Intermittent Shoreline	31.7	19.7	0.007	0.011	80.25	91.94
  Perennial Streams	693.9	431.2	0.147	0.236	31.74	50.00
  Intermittent Streams	3067.0	1906.2	0.648	1.043	84.08	83.87
  Canals	233.8	145.3	0.049	0.079	84.84	79.03
  1° roads	0.0	0.0	0.000	0.000	30.84	59.68
  2° roads	79.1	49.2	0.017	0.027	37.52	62.90
  3° roads	90.1	56.0	0.019	0.031	20.23	45.16
  4° roads	5083.0	3159.1	1.074	1.728	42.78	90.32
  Total Roads	5252.2	3264.3	1.110	1.786	36.95	88.71
  Railroads	23.7	14.7	0.005	0.008	17.34	67.74
  Pipes and Powerlines	0.0	0.0	0.000	0.000	8.67	17.74

  
  Of the natural water in this HUC, 78.98% (by length) is intermittent [% in USA = 77.31, % in Region = 61.29]

  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