Middle Brazos-Millers -- Cataloging Unit 12060101

• Middle Brazos-Clear Fork Accounting Unit 120601
  
• Middle Brazos Subregion 1206
  
• 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 6450.3 km² ( 2491.6 mi² ) [% in USA = 89.53, % in Region = 86.07]
  The area from the USGS is 2490 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 476)

  IV. Elevation Analysis

  This analysis is based on 2575758 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 434.7 m ( 1426.2 ft ) [% in USA = 52.72, % in Region = 71.31]
  The elevation standard deviation is 59.1 m ( 193.9 ft ) [% in USA = 43.44, % in Region = 63.11]
  The coefficient of variation is 13.6 %.
  The vertical relief is 357.0 m ( 1171.2 ft ) [% in USA = 45.24, % in Region = 73.77]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	313.0	365.0	381.3	396.0	417.0	429.0	445.0	458.7	478.0	517.1	670.0
  feet	1026.9	1197.5	1251.0	1299.2	1368.1	1407.5	1460.0	1504.9	1568.2	1696.5	2198.1

  

  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	290.7	180.7	0.045	0.073	33.78	31.15
  Intermittent Shoreline	64.4	40.0	0.010	0.016	85.13	74.59
  Perennial Streams	327.0	203.3	0.051	0.082	16.82	28.69
  Intermittent Streams	2763.5	1717.5	0.428	0.689	61.44	75.41
  Canals	2.3	1.5	0.000	0.001	40.55	53.28
  1° roads	1.4	0.8	0.000	0.000	35.86	21.31
  2° roads	319.3	198.4	0.049	0.080	82.28	87.70
  3° roads	237.2	147.4	0.037	0.059	37.00	42.62
  4° roads	9285.4	5770.9	1.440	2.316	74.66	45.90
  Total Roads	9843.3	6117.6	1.526	2.455	70.54	46.72
  Railroads	128.5	79.9	0.020	0.032	29.99	25.41
  Pipes and Powerlines	216.2	134.4	0.034	0.054	55.09	44.26

  
  Of the natural water in this HUC, 82.07% (by length) is intermittent [% in USA = 80.63, % in Region = 77.05]

  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