Lower Malheur -- Cataloging Unit 17050117

• 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 2364.0 km² ( 913.1 mi² ) [% in USA = 29.89, % in Region = 36.07]
  The area from the USGS is 927 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 576)

  IV. Elevation Analysis

  This analysis is based on 944765 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 1075.7 m ( 3529.2 ft ) [% in USA = 73.95, % in Region = 44.75]
  The elevation standard deviation is 260.4 m ( 854.3 ft ) [% in USA = 78.64, % in Region = 36.99]
  The coefficient of variation is 24.2 %.
  The vertical relief is 1161.0 m ( 3809.0 ft ) [% in USA = 69.64, % in Region = 15.98]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	640.0	764.7	817.3	873.7	965.6	1036.0	1137.1	1241.1	1341.0	1442.6	1801.0
  feet	2099.7	2508.8	2681.4	2866.4	3167.9	3398.9	3730.6	4071.8	4399.6	4732.9	5908.7

  

  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	28.4	17.6	0.012	0.019	14.07	15.98
  Intermittent Shoreline	1.4	0.9	0.001	0.001	46.85	63.01
  Perennial Streams	341.8	212.4	0.145	0.233	31.41	13.70
  Intermittent Streams	2053.4	1276.2	0.869	1.398	95.78	99.09
  Canals	120.8	75.1	0.051	0.082	85.41	85.84
  1° roads	2.3	1.5	0.001	0.002	41.26	68.04
  2° roads	87.9	54.6	0.037	0.060	67.46	86.76
  3° roads	3.3	2.1	0.001	0.002	4.93	17.35
  4° roads	1429.4	888.4	0.605	0.973	11.75	20.55
  Total Roads	1523.0	946.6	0.644	1.037	11.75	20.55
  Railroads	93.2	57.9	0.039	0.063	48.65	70.32
  Pipes and Powerlines	6.4	4.0	0.003	0.004	13.74	20.09

  
  Of the natural water in this HUC, 84.73% (by length) is intermittent [% in USA = 83.33, % in Region = 95.89]

  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