Big Horn Lake -- Cataloging Unit 10080010

• Big Horn Subregion 1008
  
• Missouri Region 10 (There are 310 cataloging units in this region.)
  The state composition by area is 68.4% Wyoming, 31.6% Montana.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 4649.8 km² ( 1796.1 mi² ) [% in USA = 73.28, % in Region = 67.10]
  The area from the USGS is 1800 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 860)

  IV. Elevation Analysis

  This analysis is based on 1856760 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 1755.4 m ( 5759.1 ft ) [% in USA = 88.77, % in Region = 86.77]
  The elevation standard deviation is 546.7 m ( 1793.6 ft ) [% in USA = 97.82, % in Region = 96.13]
  The coefficient of variation is 31.1 %.
  The vertical relief is 2472.4 m ( 8111.4 ft ) [% in USA = 95.22, % in Region = 95.81]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	1002.5	1219.0	1280.3	1341.2	1419.9	1528.1	1706.0	1981.5	2329.8	2667.4	3474.9
  feet	3289.0	3999.3	4200.4	4400.2	4658.4	5013.4	5597.0	6500.9	7643.6	8751.2	11400.5

  

  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	430.1	267.3	0.092	0.149	53.10	73.23
  Intermittent Shoreline	9.4	5.9	0.002	0.003	64.19	36.77
  Perennial Streams	1031.8	641.2	0.222	0.357	43.58	71.94
  Intermittent Streams	2870.9	1784.3	0.617	0.993	82.00	60.00
  Canals	113.9	70.8	0.025	0.039	76.55	76.13
  1° roads	0.0	0.0	0.000	0.000	30.84	48.39
  2° roads	137.0	85.1	0.029	0.047	55.95	69.35
  3° roads	6.9	4.3	0.001	0.002	4.97	7.74
  4° roads	3151.6	1958.8	0.678	1.091	15.54	24.84
  Total Roads	3295.5	2048.2	0.709	1.140	14.87	23.55
  Railroads	51.5	32.0	0.011	0.018	21.36	27.10
  Pipes and Powerlines	109.3	68.0	0.024	0.038	42.92	60.65

  
  Of the natural water in this HUC, 66.33% (by length) is intermittent [% in USA = 66.79, % in Region = 34.84]

  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