Lake Tahoe -- Cataloging Unit 16050101

• Truckee Accounting Unit 160501
  
• Central Lahontan Subregion 1605
  
• Great Basin Region 16 (There are 71 cataloging units in this region.)
  The state composition by area is 72.6% California, 27.4% Nevada.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 1343.3 km² ( 518.9 mi² ) [% in USA = 7.34, % in Region = 1.41]
  The area from the USGS is 505 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 698)

  IV. Elevation Analysis

  This analysis is based on 537176 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 2125.6 m ( 6973.7 ft ) [% in USA = 95.22, % in Region = 87.32]
  The elevation standard deviation is 273.8 m ( 898.3 ft ) [% in USA = 79.73, % in Region = 40.85]
  The coefficient of variation is 12.9 %.
  The vertical relief is 1642.5 m ( 5388.7 ft ) [% in USA = 79.91, % in Region = 36.62]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	1645.8	1898.0	1898.0	1899.0	1922.5	1987.3	2106.7	2255.0	2389.3	2554.7	3288.3
  feet	5399.5	6227.0	6227.0	6230.2	6307.3	6519.9	6911.7	7398.2	7838.8	8381.5	10788.3

  

  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	232.4	144.5	0.173	0.278	76.46	98.59
  Intermittent Shoreline	0.0	0.0	0.000	0.000	26.95	11.27
  Perennial Streams	510.6	317.3	0.380	0.612	68.17	97.18
  Intermittent Streams	49.9	31.0	0.037	0.060	11.65	2.82
  Canals	0.0	0.0	0.000	0.000	35.62	11.27
  1° roads	0.7	0.5	0.001	0.001	38.89	56.34
  2° roads	41.0	25.5	0.031	0.049	57.56	85.92
  3° roads	122.0	75.8	0.091	0.146	69.73	95.77
  4° roads	1494.6	928.9	1.113	1.790	46.28	91.55
  Total Roads	1658.3	1030.6	1.235	1.986	45.62	92.96
  Railroads	0.0	0.0	0.000	0.000	12.60	32.39
  Pipes and Powerlines	45.4	28.2	0.034	0.054	55.47	87.32

  
  Of the natural water in this HUC, 6.30% (by length) is intermittent [% in USA = 11.70, % in Region = 1.41]

  VI. Other sites

  • EPA- Surf Your Watershed - Index of Watershed Indicators
  • USGS- Science in Your Watershed - Selected Realtime Streamflow Stations
  • CTIC- Known Your Watershed

  ---

  1999 SEPT 4, Last updated on 2003 JAN 23
  
  D.L. Gustafson, dlg@rapid.msu.montana.edu