Upper Owyhee -- Cataloging Unit 17050104

• Middle Snake-Boise Accounting Unit 170501
  
• Middle Snake Subregion 1705
  
• Pacific Northwest Region 17 (There are 219 cataloging units in this region.)
  The state composition by area is 74.9% Idaho, 25.1% Nevada.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 5573.6 km² ( 2152.9 mi² ) [% in USA = 83.47, % in Region = 88.13]
  The area from the USGS is 2110 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 1076)

  IV. Elevation Analysis

  This analysis is based on 2228692 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 1752.1 m ( 5748.3 ft ) [% in USA = 88.68, % in Region = 84.02]
  The elevation standard deviation is 189.3 m ( 621.1 ft ) [% in USA = 70.54, % in Region = 20.09]
  The coefficient of variation is 10.8 %.
  The vertical relief is 1865.1 m ( 6119.0 ft ) [% in USA = 84.79, % in Region = 60.27]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	816.5	1559.8	1615.0	1637.1	1668.0	1707.3	1748.5	1798.0	1891.8	2030.1	2681.6
  feet	2678.8	5117.4	5298.5	5371.0	5472.4	5601.3	5736.5	5898.9	6206.6	6660.4	8797.8

  

  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	115.5	71.8	0.021	0.033	20.27	26.03
  Intermittent Shoreline	62.8	39.0	0.011	0.018	86.45	93.15
  Perennial Streams	1245.2	773.9	0.223	0.359	44.01	25.57
  Intermittent Streams	3745.1	2327.6	0.672	1.081	85.98	95.43
  Canals	127.7	79.4	0.023	0.037	75.08	72.15
  1° roads	0.0	0.0	0.000	0.000	30.84	59.82
  2° roads	0.0	0.0	0.000	0.000	15.35	29.22
  3° roads	132.4	82.3	0.024	0.038	25.06	50.68
  4° roads	3014.2	1873.3	0.541	0.870	8.95	16.89
  Total Roads	3146.6	1955.7	0.565	0.908	8.34	16.89
  Railroads	0.0	0.0	0.000	0.000	12.60	28.31
  Pipes and Powerlines	6.1	3.8	0.001	0.002	11.27	15.98

  
  Of the natural water in this HUC, 73.67% (by length) is intermittent [% in USA = 73.38, % in Region = 86.76]

  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