Boise-Mores -- Cataloging Unit 17050112

• 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% Idaho.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 1604.7 km² ( 619.9 mi² ) [% in USA = 10.61, % in Region = 12.79]
  The area from the USGS is 620 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 737)

  IV. Elevation Analysis

  This analysis is based on 641319 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 1506.4 m ( 4942.2 ft ) [% in USA = 83.47, % in Region = 72.15]
  The elevation standard deviation is 307.7 m ( 1009.5 ft ) [% in USA = 83.66, % in Region = 49.77]
  The coefficient of variation is 20.4 %.
  The vertical relief is 1752.7 m ( 5750.3 ft ) [% in USA = 82.19, % in Region = 51.60]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	929.3	1145.7	1257.7	1334.4	1396.7	1463.0	1529.5	1629.4	1756.4	1948.4	2682.0
  feet	3048.8	3758.8	4126.3	4377.9	4582.3	4799.8	5018.0	5345.7	5762.4	6392.3	8799.1

  

  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	113.5	70.5	0.071	0.114	44.77	57.99
  Intermittent Shoreline	0.0	0.0	0.000	0.000	26.95	43.84
  Perennial Streams	904.0	561.8	0.563	0.906	88.44	71.23
  Intermittent Streams	452.5	281.2	0.282	0.454	42.35	52.97
  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	66.9	41.6	0.042	0.067	40.83	70.78
  4° roads	1333.4	828.7	0.831	1.337	24.02	38.36
  Total Roads	1400.3	870.3	0.873	1.404	23.16	40.18
  Railroads	0.0	0.0	0.000	0.000	12.60	28.31
  Pipes and Powerlines	1.6	1.0	0.001	0.002	10.99	15.07

  
  Of the natural water in this HUC, 30.78% (by length) is intermittent [% in USA = 34.72, % in Region = 47.49]

  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