Upper Nueces -- Cataloging Unit 12110103

• Nueces Accounting Unit 121101
  
• Nueces-Southwestern Texas Coastal Subregion 1211
  
• 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 4875.1 km² ( 1883.1 mi² ) [% in USA = 76.46, % in Region = 72.13]
  The area from the USGS is 1900 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 351)

  IV. Elevation Analysis

  This analysis is based on 1945996 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 196.4 m ( 644.3 ft ) [% in USA = 23.83, % in Region = 52.46]
  The elevation standard deviation is 57.4 m ( 188.3 ft ) [% in USA = 42.35, % in Region = 59.02]
  The coefficient of variation is 29.2 %.
  The vertical relief is 464.0 m ( 1522.3 ft ) [% in USA = 51.73, % in Region = 86.89]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	115.0	148.1	159.0	167.0	175.0	182.7	195.0	204.5	219.3	248.9	579.0
  feet	377.3	485.9	521.6	547.9	574.1	599.4	639.8	670.9	719.5	816.6	1899.6

  

  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	241.5	150.1	0.050	0.080	35.77	35.25
  Intermittent Shoreline	46.5	28.9	0.010	0.015	84.75	72.95
  Perennial Streams	250.8	155.8	0.051	0.083	17.10	30.33
  Intermittent Streams	2334.5	1450.9	0.479	0.770	66.84	88.52
  Canals	0.0	0.0	0.000	0.000	35.62	41.80
  1° roads	0.0	0.0	0.000	0.000	30.84	10.66
  2° roads	150.2	93.4	0.031	0.050	58.12	49.18
  3° roads	54.0	33.5	0.011	0.018	12.08	13.11
  4° roads	7184.1	4464.9	1.474	2.371	77.07	53.28
  Total Roads	7388.3	4591.9	1.516	2.438	69.68	44.26
  Railroads	144.6	89.8	0.030	0.048	39.37	38.52
  Pipes and Powerlines	97.3	60.5	0.020	0.032	38.42	25.41

  
  Of the natural water in this HUC, 82.87% (by length) is intermittent [% in USA = 81.48, % in Region = 80.33]

  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