Thousand-Virgin -- Cataloging Unit 16040205

• Black Rock Desert Accounting Unit 160402
  
• Black Rock Desert-Humboldt Subregion 1604
  
• Great Basin Region 16 (There are 71 cataloging units in this region.)
  The state composition by area is 75.3% Nevada, 24.7% Oregon.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 3042.9 km² ( 1175.4 mi² ) [% in USA = 47.47, % in Region = 32.39]
  The area from the USGS is 1150 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 397)

  IV. Elevation Analysis

  This analysis is based on 1215354 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 1701.2 m ( 5581.3 ft ) [% in USA = 87.40, % in Region = 36.62]
  The elevation standard deviation is 229.6 m ( 753.3 ft ) [% in USA = 74.89, % in Region = 19.72]
  The coefficient of variation is 13.5 %.
  The vertical relief is 1598.0 m ( 5242.7 ft ) [% in USA = 78.92, % in Region = 29.58]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	1258.8	1370.3	1486.8	1570.8	1646.0	1708.4	1778.2	1834.0	1889.4	1969.6	2856.8
  feet	4129.9	4495.7	4877.9	5153.5	5400.2	5604.9	5833.9	6017.0	6198.7	6461.9	9372.6

  

  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	52.2	32.5	0.017	0.028	17.86	53.52
  Intermittent Shoreline	42.9	26.7	0.014	0.023	88.58	97.18
  Perennial Streams	240.0	149.1	0.079	0.127	21.84	52.11
  Intermittent Streams	2222.4	1381.2	0.730	1.175	89.34	74.65
  Canals	0.0	0.0	0.000	0.000	35.62	11.27
  1° roads	0.0	0.0	0.000	0.000	30.84	53.52
  2° roads	0.0	0.0	0.000	0.000	15.35	26.76
  3° roads	81.8	50.8	0.027	0.043	27.71	54.93
  4° roads	1119.9	696.0	0.368	0.592	3.27	5.63
  Total Roads	1201.7	746.8	0.395	0.635	3.32	5.63
  Railroads	0.0	0.0	0.000	0.000	12.60	32.39
  Pipes and Powerlines	0.0	0.0	0.000	0.000	8.67	11.27

  
  Of the natural water in this HUC, 88.58% (by length) is intermittent [% in USA = 87.26, % in Region = 56.34]

  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