Central Coastal -- Cataloging Unit 18060006

• Central California Coastal Subregion 1806
  
• 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 2889.3 km² ( 1116.0 mi² ) [% in USA = 44.67, % in Region = 65.93]
  The area from the USGS is 1070 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 1264)

  IV. Elevation Analysis

  This analysis is based on 1153628 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 344.8 m ( 1131.2 ft ) [% in USA = 44.15, % in Region = 29.63]
  The elevation standard deviation is 286.2 m ( 939.0 ft ) [% in USA = 81.10, % in Region = 42.22]
  The coefficient of variation is 83.0 %.
  The vertical relief is 1489.3 m ( 4886.1 ft ) [% in USA = 76.41, % in Region = 40.00]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	0.0	44.3	83.1	127.1	199.9	264.3	368.4	432.9	600.0	783.1	1489.3
  feet	0.0	145.3	272.6	417.0	655.8	867.1	1208.6	1420.3	1968.5	2569.2	4886.1

  

  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	393.7	244.7	0.136	0.219	67.55	74.81
  Intermittent Shoreline	5.6	3.5	0.002	0.003	63.19	62.22
  Perennial Streams	872.9	542.5	0.302	0.486	56.99	57.78
  Intermittent Streams	1443.6	897.2	0.500	0.804	69.40	69.63
  Canals	7.9	4.9	0.003	0.004	53.10	35.56
  1° roads	103.7	64.5	0.036	0.058	83.61	74.07
  2° roads	0.0	0.0	0.000	0.000	15.35	73.33
  3° roads	247.3	153.7	0.086	0.138	67.46	88.15
  4° roads	3508.2	2180.4	1.214	1.954	55.14	48.89
  Total Roads	3859.2	2398.5	1.336	2.149	54.71	54.07
  Railroads	61.6	38.3	0.021	0.034	31.17	48.15
  Pipes and Powerlines	206.1	128.1	0.071	0.115	85.74	90.37

  
  Of the natural water in this HUC, 53.36% (by length) is intermittent [% in USA = 54.00, % in Region = 58.52]

  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