Lower Neches -- Cataloging Unit 12020003

• Neches Subregion 1202
  
• 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 2885.9 km² ( 1114.7 mi² ) [% in USA = 44.43, % in Region = 41.80]
  The area from the USGS is 1130 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 784)

  IV. Elevation Analysis

  This analysis is based on 1153376 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 38.8 m ( 127.3 ft ) [% in USA = 7.48, % in Region = 17.21]
  The elevation standard deviation is 31.4 m ( 103.0 ft ) [% in USA = 22.88, % in Region = 30.33]
  The coefficient of variation is 80.9 %.
  The vertical relief is 164.0 m ( 538.1 ft ) [% in USA = 20.99, % in Region = 28.69]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	0.0	4.0	10.0	16.8	22.0	30.0	42.8	54.4	66.2	85.6	164.0
  feet	0.0	13.1	32.8	55.1	72.2	98.4	140.4	178.5	217.2	280.8	538.1

  

  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	810.1	503.5	0.281	0.452	89.39	88.52
  Intermittent Shoreline	3.2	2.0	0.001	0.002	55.38	38.52
  Perennial Streams	867.2	539.0	0.301	0.484	56.70	86.07
  Intermittent Streams	883.2	548.9	0.306	0.492	45.95	50.00
  Canals	46.4	28.8	0.016	0.026	70.96	80.33
  1° roads	28.1	17.5	0.010	0.016	54.71	54.92
  2° roads	124.9	77.7	0.043	0.070	75.13	72.95
  3° roads	55.1	34.2	0.019	0.031	20.27	20.49
  4° roads	4208.9	2615.9	1.458	2.347	76.17	50.82
  Total Roads	4417.0	2745.2	1.531	2.463	70.91	49.18
  Railroads	169.9	105.6	0.059	0.095	66.04	72.13
  Pipes and Powerlines	108.2	67.3	0.038	0.060	59.02	47.54

  
  Of the natural water in this HUC, 34.57% (by length) is intermittent [% in USA = 37.90, % in Region = 25.41]

  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