Santa Clara -- Cataloging Unit 18070102

• Ventura-San Gabriel Coastal Accounting Unit 180701
  
• Southern California Coastal Subregion 1807
  
• 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 4235.2 km² ( 1635.9 mi² ) [% in USA = 68.45, % in Region = 83.70]
  The area from the USGS is 1610 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 1602)

  IV. Elevation Analysis

  This analysis is based on 1691751 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 954.7 m ( 3132.2 ft ) [% in USA = 71.44, % in Region = 65.93]
  The elevation standard deviation is 491.6 m ( 1612.8 ft ) [% in USA = 96.64, % in Region = 79.26]
  The coefficient of variation is 51.5 %.
  The vertical relief is 2681.8 m ( 8798.5 ft ) [% in USA = 97.16, % in Region = 80.00]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	0.0	323.2	486.9	641.1	814.9	946.8	1064.5	1208.7	1399.4	1618.8	2681.8
  feet	0.0	1060.4	1597.4	2103.3	2673.5	3106.3	3492.4	3965.5	4591.2	5311.0	8798.5

  

  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	158.7	98.6	0.037	0.060	29.65	34.07
  Intermittent Shoreline	65.6	40.7	0.015	0.025	89.44	86.67
  Perennial Streams	920.0	571.8	0.217	0.350	42.78	42.96
  Intermittent Streams	1615.6	1004.1	0.381	0.614	55.76	59.26
  Canals	55.2	34.3	0.013	0.021	69.11	55.56
  1° roads	171.9	106.8	0.041	0.065	86.17	76.30
  2° roads	0.0	0.0	0.000	0.000	15.35	73.33
  3° roads	110.7	68.8	0.026	0.042	27.00	30.37
  4° roads	4595.7	2856.3	1.085	1.746	43.68	36.30
  Total Roads	4878.3	3031.9	1.152	1.853	39.51	37.04
  Railroads	144.5	89.8	0.034	0.055	43.68	57.04
  Pipes and Powerlines	75.3	46.8	0.018	0.029	35.34	49.63

  
  Of the natural water in this HUC, 60.91% (by length) is intermittent [% in USA = 61.39, % in Region = 65.93]

  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