Lower Feather -- Cataloging Unit 18020106

• 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 2139.2 km² ( 826.3 mi² ) [% in USA = 23.92, % in Region = 50.37]
  The area from the USGS is 681 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 715)

  IV. Elevation Analysis

  This analysis is based on 854943 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 72.6 m ( 238.2 ft ) [% in USA = 11.61, % in Region = 5.19]
  The elevation standard deviation is 117.6 m ( 385.8 ft ) [% in USA = 59.64, % in Region = 11.11]
  The coefficient of variation is 162.0 %.
  The vertical relief is 848.0 m ( 2782.1 ft ) [% in USA = 62.81, % in Region = 13.33]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	5.0	11.0	14.0	18.0	22.6	26.0	30.0	46.0	89.5	202.7	853.0
  feet	16.4	36.1	45.9	59.1	74.1	85.3	98.4	150.9	293.6	665.0	2798.5

  

  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	434.4	270.0	0.203	0.327	80.96	91.85
  Intermittent Shoreline	6.0	3.7	0.003	0.005	68.97	67.41
  Perennial Streams	238.6	148.3	0.112	0.179	27.00	21.48
  Intermittent Streams	1005.6	625.0	0.470	0.756	66.04	66.67
  Canals	990.6	615.7	0.463	0.745	99.24	98.52
  1° roads	32.2	20.0	0.015	0.024	62.48	60.00
  2° roads	0.0	0.0	0.000	0.000	15.35	73.33
  3° roads	209.4	130.1	0.098	0.157	72.19	91.85
  4° roads	4119.1	2560.0	1.926	3.098	91.66	80.74
  Total Roads	4360.7	2710.2	2.039	3.280	89.82	81.48
  Railroads	260.0	161.6	0.122	0.196	91.71	93.33
  Pipes and Powerlines	325.4	202.2	0.152	0.245	99.19	98.52

  
  Of the natural water in this HUC, 60.05% (by length) is intermittent [% in USA = 60.59, % in Region = 65.19]

  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