Sacramento-Upper Clear -- Cataloging Unit 18020112

• Lower Sacramento Accounting Unit 180201
  
• Upper Sacramento Subregion 1802
  
• California Region 18 (There are 135 cataloging units in this region.)
  The state composition by area is 100.0% California.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 519.1 km² ( 200.5 mi² ) [% in USA = 1.47, % in Region = 9.63]
  The area from the USGS is 269 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 346)

  IV. Elevation Analysis

  This analysis is based on 207123 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 883.5 m ( 2898.6 ft ) [% in USA = 69.64, % in Region = 60.74]
  The elevation standard deviation is 300.3 m ( 985.2 ft ) [% in USA = 82.80, % in Region = 46.67]
  The coefficient of variation is 34.0 %.
  The vertical relief is 1585.6 m ( 5202.0 ft ) [% in USA = 78.40, % in Region = 41.48]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	304.0	486.8	600.7	686.4	788.3	875.2	969.1	1061.4	1163.2	1284.9	1889.6
  feet	997.4	1597.1	1970.8	2251.9	2586.3	2871.4	3179.4	3482.2	3816.2	4215.5	6199.4

  

  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	63.3	39.3	0.122	0.196	63.05	69.63
  Intermittent Shoreline	0.0	0.0	0.000	0.000	26.95	33.33
  Perennial Streams	264.8	164.5	0.510	0.821	83.09	85.19
  Intermittent Streams	58.9	36.6	0.113	0.183	21.13	21.48
  Canals	0.0	0.0	0.000	0.000	35.62	25.19
  1° roads	0.0	0.0	0.000	0.000	30.84	40.00
  2° roads	0.0	0.0	0.000	0.000	15.35	73.33
  3° roads	27.2	16.9	0.052	0.084	48.70	56.30
  4° roads	454.9	282.7	0.876	1.410	27.81	20.00
  Total Roads	482.2	299.7	0.929	1.494	26.29	20.74
  Railroads	0.0	0.0	0.000	0.000	12.60	30.37
  Pipes and Powerlines	49.4	30.7	0.095	0.153	93.23	93.33

  
  Of the natural water in this HUC, 15.22% (by length) is intermittent [% in USA = 19.94, % in Region = 20.74]

  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