South Fork Owyhee -- Cataloging Unit 17050105

• 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 85.6% Nevada, 13.9% Idaho, 0.5% Oregon.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 4862.8 km² ( 1878.3 mi² ) [% in USA = 76.22, % in Region = 82.65]
  The area from the USGS is 1860 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 608)

  IV. Elevation Analysis

  This analysis is based on 1941909 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 1759.1 m ( 5771.3 ft ) [% in USA = 88.92, % in Region = 84.47]
  The elevation standard deviation is 230.7 m ( 756.9 ft ) [% in USA = 75.04, % in Region = 28.77]
  The coefficient of variation is 13.1 %.
  The vertical relief is 1823.3 m ( 5981.9 ft ) [% in USA = 83.80, % in Region = 56.16]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	1341.0	1571.9	1590.0	1615.0	1645.3	1668.9	1714.3	1805.5	1932.7	2096.0	3164.3
  feet	4399.6	5157.1	5216.5	5298.5	5397.9	5475.3	5624.3	5923.5	6340.8	6876.6	10381.4

  

  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	58.8	36.5	0.012	0.019	14.26	16.44
  Intermittent Shoreline	0.0	0.0	0.000	0.000	26.95	43.84
  Perennial Streams	792.5	492.6	0.163	0.262	34.01	16.89
  Intermittent Streams	3389.7	2106.7	0.697	1.122	87.49	96.80
  Canals	174.4	108.4	0.036	0.058	80.91	79.45
  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	126.5	78.6	0.026	0.042	26.86	54.34
  4° roads	2280.5	1417.3	0.469	0.755	6.16	12.79
  Total Roads	2407.0	1495.9	0.495	0.796	6.02	12.79
  Railroads	0.0	0.0	0.000	0.000	12.60	28.31
  Pipes and Powerlines	7.6	4.7	0.002	0.002	12.03	17.35

  
  Of the natural water in this HUC, 79.93% (by length) is intermittent [% in USA = 78.35, % in Region = 91.78]

  VI. Other sites

  • EPA- Surf Your Watershed - Index of Watershed Indicators
  • USGS- Science in Your Watershed - Selected Realtime Streamflow Stations
  • CTIC- Known Your Watershed

  ---

  1999 SEPT 4, Last updated on 2003 JAN 23
  
  D.L. Gustafson, dlg@rapid.msu.montana.edu