Salt Fork Brazos -- Cataloging Unit 12050007

• Brazos headwaters Subregion 1205
  
• Texas-Gulf Region 12 (There are 122 cataloging units in this region.)
  The state composition by area is 100.0% Texas.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 5711.1 km² ( 2206.0 mi² ) [% in USA = 84.75, % in Region = 79.51]
  The area from the USGS is 2150 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 414)

  IV. Elevation Analysis

  This analysis is based on 2280640 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 678.5 m ( 2226.0 ft ) [% in USA = 63.19, % in Region = 86.89]
  The elevation standard deviation is 129.2 m ( 423.9 ft ) [% in USA = 61.49, % in Region = 96.72]
  The coefficient of variation is 19.0 %.
  The vertical relief is 572.8 m ( 1879.2 ft ) [% in USA = 56.85, % in Region = 96.72]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	437.2	532.9	568.6	598.2	627.7	656.8	689.4	722.2	762.6	916.9	1010.0
  feet	1434.4	1748.3	1865.5	1962.6	2059.4	2154.8	2261.8	2369.4	2501.9	3008.2	3313.6

  

  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	134.2	83.4	0.023	0.038	22.12	18.85
  Intermittent Shoreline	118.9	73.9	0.021	0.033	92.28	82.79
  Perennial Streams	372.8	231.7	0.065	0.105	19.66	36.07
  Intermittent Streams	1889.1	1174.1	0.331	0.532	49.27	56.56
  Canals	0.0	0.0	0.000	0.000	35.62	41.80
  1° roads	2.2	1.4	0.000	0.001	37.71	23.77
  2° roads	180.4	112.1	0.032	0.051	59.64	50.82
  3° roads	155.2	96.4	0.027	0.044	28.04	31.97
  4° roads	7072.4	4395.5	1.238	1.993	57.51	16.39
  Total Roads	7410.2	4605.4	1.297	2.088	51.02	15.57
  Railroads	54.6	33.9	0.010	0.015	20.23	12.30
  Pipes and Powerlines	130.3	81.0	0.023	0.037	41.69	29.51

  
  Of the natural water in this HUC, 79.84% (by length) is intermittent [% in USA = 78.16, % in Region = 72.95]

  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