Little Bighorn -- Cataloging Unit 10080016

• Big Horn Subregion 1008
  
• Missouri Region 10 (There are 310 cataloging units in this region.)
  The state composition by area is 78.3% Montana, 21.7% Wyoming.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 3346.0 km² ( 1292.4 mi² ) [% in USA = 52.77, % in Region = 44.84]
  The area from the USGS is 1290 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 543)

  IV. Elevation Analysis

  This analysis is based on 1337575 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 1423.6 m ( 4670.5 ft ) [% in USA = 81.43, % in Region = 76.13]
  The elevation standard deviation is 504.1 m ( 1653.9 ft ) [% in USA = 97.06, % in Region = 94.84]
  The coefficient of variation is 35.4 %.
  The vertical relief is 2115.0 m ( 6938.9 ft ) [% in USA = 90.00, % in Region = 92.58]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	872.0	1006.0	1067.0	1127.0	1173.7	1223.8	1308.4	1403.3	1653.0	2393.4	2987.0
  feet	2860.9	3300.5	3500.6	3697.5	3850.7	4015.0	4292.6	4603.9	5423.2	7852.3	9799.8

  

  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	56.5	35.1	0.017	0.027	17.43	17.10
  Intermittent Shoreline	1.4	0.9	0.000	0.001	42.87	19.03
  Perennial Streams	850.3	528.5	0.254	0.409	48.98	77.74
  Intermittent Streams	1380.4	857.9	0.413	0.664	59.36	27.74
  Canals	140.3	87.2	0.042	0.067	82.66	82.90
  1° roads	100.8	62.6	0.030	0.048	79.82	91.29
  2° roads	22.9	14.3	0.007	0.011	23.40	21.94
  3° roads	5.5	3.4	0.002	0.003	5.07	8.06
  4° roads	2626.4	1632.3	0.785	1.263	21.51	34.84
  Total Roads	2755.5	1712.6	0.824	1.325	20.32	33.87
  Railroads	104.7	65.1	0.031	0.050	40.83	59.03
  Pipes and Powerlines	83.8	52.1	0.025	0.040	45.00	63.23

  
  Of the natural water in this HUC, 60.38% (by length) is intermittent [% in USA = 60.97, % in Region = 28.71]

  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