Willow -- Cataloging Unit 17050119

• 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 100.0% Oregon.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 1998.3 km² ( 771.9 mi² ) [% in USA = 19.94, % in Region = 24.66]
  The area from the USGS is 773 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 548)

  IV. Elevation Analysis

  This analysis is based on 798272 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 1148.2 m ( 3767.0 ft ) [% in USA = 75.56, % in Region = 50.23]
  The elevation standard deviation is 281.2 m ( 922.6 ft ) [% in USA = 80.63, % in Region = 41.55]
  The coefficient of variation is 24.5 %.
  The vertical relief is 1646.1 m ( 5400.5 ft ) [% in USA = 80.01, % in Region = 44.29]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	677.0	790.2	853.0	949.4	1097.0	1159.0	1219.0	1280.0	1365.5	1523.0	2323.1
  feet	2221.1	2592.5	2798.5	3114.8	3599.0	3802.4	3999.3	4199.4	4479.9	4996.7	7621.6

  

  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	16.5	10.2	0.008	0.013	10.85	10.50
  Intermittent Shoreline	0.0	0.0	0.000	0.000	26.95	43.84
  Perennial Streams	505.9	314.4	0.253	0.407	48.84	29.22
  Intermittent Streams	1344.6	835.7	0.673	1.083	86.12	95.89
  Canals	0.7	0.4	0.000	0.001	40.50	27.85
  1° roads	0.0	0.0	0.000	0.000	30.84	59.82
  2° roads	90.9	56.5	0.046	0.073	77.50	93.61
  3° roads	0.0	0.0	0.000	0.000	4.07	15.53
  4° roads	1613.4	1002.8	0.807	1.299	22.45	36.53
  Total Roads	1704.4	1059.3	0.853	1.372	21.93	37.44
  Railroads	11.1	6.9	0.006	0.009	17.72	35.62
  Pipes and Powerlines	6.9	4.3	0.003	0.006	14.78	21.00

  
  Of the natural water in this HUC, 72.02% (by length) is intermittent [% in USA = 71.86, % in Region = 84.93]

  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