Middle Snake-Succor -- Cataloging Unit 17050103

• 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 86.4% Idaho, 13.6% Oregon.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 6033.3 km² ( 2330.5 mi² ) [% in USA = 86.69, % in Region = 91.78]
  The area from the USGS is 2280 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 1047)

  IV. Elevation Analysis

  This analysis is based on 2409796 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 1103.0 m ( 3618.7 ft ) [% in USA = 74.47, % in Region = 46.12]
  The elevation standard deviation is 337.2 m ( 1106.3 ft ) [% in USA = 86.31, % in Region = 59.82]
  The coefficient of variation is 30.6 %.
  The vertical relief is 1884.7 m ( 6183.3 ft ) [% in USA = 85.08, % in Region = 61.64]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	670.0	733.3	798.0	863.0	914.5	976.0	1100.3	1266.3	1405.2	1640.6	2554.7
  feet	2198.1	2405.8	2618.1	2831.3	3000.3	3202.1	3609.9	4154.5	4610.2	5382.5	8381.5

  

  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	438.9	272.8	0.073	0.117	45.52	58.45
  Intermittent Shoreline	22.7	14.1	0.004	0.006	73.24	85.84
  Perennial Streams	908.0	564.4	0.151	0.242	32.31	15.53
  Intermittent Streams	3907.9	2428.8	0.648	1.042	83.94	94.06
  Canals	790.2	491.1	0.131	0.211	94.55	95.43
  1° roads	0.0	0.0	0.000	0.000	30.84	59.82
  2° roads	74.2	46.1	0.012	0.020	30.51	52.51
  3° roads	163.4	101.5	0.027	0.044	27.90	57.08
  4° roads	6458.7	4014.1	1.071	1.722	42.49	57.53
  Total Roads	6696.4	4161.8	1.110	1.786	36.90	57.08
  Railroads	58.1	36.1	0.010	0.015	20.42	39.27
  Pipes and Powerlines	145.0	90.1	0.024	0.039	43.58	54.79

  
  Of the natural water in this HUC, 74.48% (by length) is intermittent [% in USA = 73.95, % in Region = 87.67]

  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