Rita Blanca -- Cataloging Unit 11090103

• Middle Canadian Accounting Unit 110901
  
• Lower Canadian Subregion 1109
  
• Arkansas-White-Red Region 11 (There are 173 cataloging units in this region.)
  The state composition by area is 63.4% Texas, 35.9% New Mexico, 0.7% Oklahoma.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 2957.6 km² ( 1142.4 mi² ) [% in USA = 46.00, % in Region = 43.35]
  The area from the USGS is 1130 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 185)

  IV. Elevation Analysis

  This analysis is based on 1181176 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 1371.5 m ( 4499.6 ft ) [% in USA = 80.25, % in Region = 88.44]
  The elevation standard deviation is 167.8 m ( 550.5 ft ) [% in USA = 67.08, % in Region = 86.71]
  The coefficient of variation is 12.2 %.
  The vertical relief is 851.3 m ( 2792.9 ft ) [% in USA = 62.96, % in Region = 88.44]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	1041.9	1190.0	1210.0	1242.0	1293.0	1341.0	1402.9	1461.1	1524.8	1617.7	1893.2
  feet	3418.3	3904.2	3969.8	4074.8	4242.1	4399.6	4602.6	4793.6	5002.6	5307.4	6211.2

  

  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	23.8	14.8	0.008	0.013	10.52	9.25
  Intermittent Shoreline	71.9	44.7	0.024	0.039	93.23	86.71
  Perennial Streams	34.4	21.4	0.012	0.019	7.30	5.78
  Intermittent Streams	770.0	478.5	0.260	0.419	39.41	16.76
  Canals	0.0	0.0	0.000	0.000	35.62	56.65
  1° roads	0.4	0.3	0.000	0.000	35.05	33.53
  2° roads	218.0	135.5	0.074	0.119	94.88	97.69
  3° roads	57.3	35.6	0.019	0.031	20.65	12.14
  4° roads	3311.9	2058.4	1.120	1.802	46.66	45.66
  Total Roads	3587.7	2229.8	1.213	1.952	44.10	42.77
  Railroads	173.3	107.7	0.059	0.094	65.70	67.63
  Pipes and Powerlines	0.0	0.0	0.000	0.000	8.67	8.09

  
  Of the natural water in this HUC, 93.53% (by length) is intermittent [% in USA = 91.76, % in Region = 93.64]

  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