Palisades -- Cataloging Unit 17040104

• Snake headwaters Accounting Unit 170401
  
• Upper Snake Subregion 1704
  
• Pacific Northwest Region 17 (There are 219 cataloging units in this region.)
  The state composition by area is 90.0% Idaho, 10.0% Wyoming.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 2427.0 km² ( 937.5 mi² ) [% in USA = 31.41, % in Region = 38.81]
  The area from the USGS is 915 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 786)

  IV. Elevation Analysis

  This analysis is based on 969197 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 2075.5 m ( 6809.3 ft ) [% in USA = 94.55, % in Region = 94.52]
  The elevation standard deviation is 292.9 m ( 960.9 ft ) [% in USA = 82.05, % in Region = 45.21]
  The coefficient of variation is 14.1 %.
  The vertical relief is 1462.3 m ( 4797.5 ft ) [% in USA = 75.84, % in Region = 31.51]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	1530.1	1714.8	1778.2	1890.0	1971.8	2053.7	2131.3	2208.2	2316.0	2489.7	2992.4
  feet	5020.0	5625.9	5833.9	6200.7	6469.1	6737.8	6992.4	7244.7	7598.3	8168.2	9817.5

  

  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	269.7	167.6	0.111	0.179	59.83	72.60
  Intermittent Shoreline	0.0	0.0	0.000	0.000	26.95	43.84
  Perennial Streams	1082.9	673.0	0.446	0.718	76.13	51.14
  Intermittent Streams	1144.4	711.2	0.472	0.759	66.13	76.26
  Canals	3.1	1.9	0.001	0.002	47.09	36.07
  1° roads	0.2	0.1	0.000	0.000	33.49	62.10
  2° roads	86.9	54.0	0.036	0.058	65.56	85.39
  3° roads	22.9	14.3	0.009	0.015	10.52	29.22
  4° roads	706.3	438.9	0.291	0.468	2.08	5.48
  Total Roads	816.2	507.3	0.336	0.541	2.32	5.94
  Railroads	0.0	0.0	0.000	0.000	12.60	28.31
  Pipes and Powerlines	85.6	53.2	0.035	0.057	56.89	68.04

  
  Of the natural water in this HUC, 45.83% (by length) is intermittent [% in USA = 48.08, % in Region = 61.64]

  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