South Fork Salmon -- Cataloging Unit 17060208

• Salmon Accounting Unit 170602
  
• Lower Snake Subregion 1706
  
• Pacific Northwest Region 17 (There are 219 cataloging units in this region.)
  The state composition by area is 100.0% Idaho.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 3388.2 km² ( 1308.8 mi² ) [% in USA = 53.58, % in Region = 62.56]
  The area from the USGS is 1310 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 939)

  IV. Elevation Analysis

  This analysis is based on 1353720 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 2008.7 m ( 6590.1 ft ) [% in USA = 93.60, % in Region = 93.15]
  The elevation standard deviation is 354.6 m ( 1163.4 ft ) [% in USA = 87.92, % in Region = 66.21]
  The coefficient of variation is 17.7 %.
  The vertical relief is 2142.2 m ( 7028.1 ft ) [% in USA = 90.72, % in Region = 76.26]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	666.2	1506.1	1713.0	1870.7	1970.9	2071.6	2141.6	2229.9	2316.0	2424.0	2808.4
  feet	2185.7	4941.2	5620.0	6137.4	6466.1	6796.5	7026.2	7315.9	7598.3	7952.7	9213.8

  

  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	71.4	44.4	0.021	0.034	20.37	26.48
  Intermittent Shoreline	1.3	0.8	0.000	0.001	41.02	55.25
  Perennial Streams	2394.0	1487.9	0.707	1.137	97.06	93.15
  Intermittent Streams	231.4	143.8	0.068	0.110	15.63	21.00
  Canals	0.0	0.0	0.000	0.000	35.62	23.74
  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	0.0	0.0	0.000	0.000	4.07	15.53
  4° roads	1147.0	712.9	0.339	0.545	2.51	6.39
  Total Roads	1147.0	712.9	0.339	0.545	2.37	6.39
  Railroads	0.0	0.0	0.000	0.000	12.60	28.31
  Pipes and Powerlines	0.0	0.0	0.000	0.000	8.67	12.79

  
  Of the natural water in this HUC, 8.62% (by length) is intermittent [% in USA = 13.93, % in Region = 21.00]

  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