Sacramento headwaters -- Cataloging Unit 18020005

• 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 1565.7 km² ( 604.8 mi² ) [% in USA = 10.00, % in Region = 34.07]
  The area from the USGS is 587 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 678)

  IV. Elevation Analysis

  This analysis is based on 625225 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 1065.6 m ( 3496.0 ft ) [% in USA = 73.66, % in Region = 68.15]
  The elevation standard deviation is 521.2 m ( 1710.0 ft ) [% in USA = 97.30, % in Region = 81.48]
  The coefficient of variation is 48.9 %.
  The vertical relief is 3871.8 m ( 12702.6 ft ) [% in USA = 99.76, % in Region = 98.52]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	285.2	427.0	598.3	735.3	880.7	1013.0	1139.6	1276.0	1487.7	1766.2	4157.0
  feet	935.7	1400.9	1962.9	2412.4	2889.4	3323.5	3738.8	4186.3	4880.8	5794.5	13638.3

  

  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	271.3	168.6	0.173	0.279	76.50	87.41
  Intermittent Shoreline	0.0	0.0	0.000	0.000	26.95	33.33
  Perennial Streams	620.4	385.6	0.396	0.638	69.92	67.41
  Intermittent Streams	182.9	113.7	0.117	0.188	21.46	22.22
  Canals	0.0	0.0	0.000	0.000	35.62	25.19
  1° roads	110.7	68.8	0.071	0.114	94.32	86.67
  2° roads	0.0	0.0	0.000	0.000	15.35	73.33
  3° roads	12.5	7.8	0.008	0.013	9.00	9.63
  4° roads	1977.6	1229.1	1.263	2.032	60.59	54.81
  Total Roads	2100.8	1305.6	1.342	2.159	55.09	54.81
  Railroads	149.6	93.0	0.096	0.154	85.60	87.41
  Pipes and Powerlines	114.0	70.8	0.073	0.117	86.26	91.11

  
  Of the natural water in this HUC, 17.02% (by length) is intermittent [% in USA = 21.79, % in Region = 23.70]

  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