Franklin D. Roosevelt Lake -- Cataloging Unit 17020001

• Upper Columbia Subregion 1702
  
• Pacific Northwest Region 17 (There are 219 cataloging units in this region.)
  The state composition by area is 100.0% Washington.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 5488.0 km² ( 2119.9 mi² ) [% in USA = 82.80, % in Region = 86.30]
  The area from the USGS is 2170 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 1223)

  IV. Elevation Analysis

  This analysis is based on 2192937 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 841.0 m ( 2759.2 ft ) [% in USA = 68.12, % in Region = 35.16]
  The elevation standard deviation is 298.9 m ( 980.6 ft ) [% in USA = 82.71, % in Region = 47.49]
  The coefficient of variation is 35.5 %.
  The vertical relief is 1828.9 m ( 6000.3 ft ) [% in USA = 84.08, % in Region = 57.99]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	304.1	466.8	597.9	672.5	731.0	790.3	861.6	966.5	1081.2	1260.8	2133.0
  feet	997.7	1531.5	1961.6	2206.3	2398.3	2592.8	2826.7	3170.9	3547.2	4136.4	6997.9

  

  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	732.3	455.1	0.133	0.215	66.65	80.37
  Intermittent Shoreline	17.6	10.9	0.003	0.005	70.96	84.02
  Perennial Streams	1511.2	939.2	0.275	0.443	53.06	32.88
  Intermittent Streams	1432.3	890.2	0.261	0.420	39.46	49.32
  Canals	0.8	0.5	0.000	0.000	38.37	24.66
  1° roads	0.4	0.2	0.000	0.000	33.44	61.64
  2° roads	31.4	19.5	0.006	0.009	22.07	42.92
  3° roads	259.9	161.5	0.047	0.076	44.67	77.17
  4° roads	6470.1	4021.2	1.179	1.897	51.87	66.21
  Total Roads	6761.9	4202.5	1.232	1.982	45.52	66.67
  Railroads	121.1	75.3	0.022	0.036	31.88	51.14
  Pipes and Powerlines	109.1	67.8	0.020	0.032	38.18	48.86

  
  Of the natural water in this HUC, 39.26% (by length) is intermittent [% in USA = 42.49, % in Region = 55.25]

  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