Lower San Pedro -- Cataloging Unit 15050203

• San Pedro-Willcox Accounting Unit 150502
  
• Middle Gila Subregion 1505
  
• Lower Colorado Region 15 (There are 85 cataloging units in this region.)
  The state composition by area is 100.0% Arizona.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 5125.6 km² ( 1979.9 mi² ) [% in USA = 79.20, % in Region = 63.53]
  The area from the USGS is 1980 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 1342)

  IV. Elevation Analysis

  This analysis is based on 2046927 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 1232.6 m ( 4043.9 ft ) [% in USA = 77.55, % in Region = 41.18]
  The elevation standard deviation is 295.7 m ( 970.1 ft ) [% in USA = 82.33, % in Region = 63.53]
  The coefficient of variation is 24.0 %.
  The vertical relief is 1962.2 m ( 6437.6 ft ) [% in USA = 87.02, % in Region = 63.53]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	609.0	859.2	979.7	1071.5	1147.8	1216.5	1279.4	1356.5	1462.0	1626.7	2571.2
  feet	1998.0	2818.9	3214.2	3515.4	3765.7	3991.1	4197.5	4450.4	4796.5	5336.9	8435.6

  

  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	2.7	1.7	0.001	0.001	2.27	17.65
  Intermittent Shoreline	113.1	70.3	0.022	0.036	92.75	94.12
  Perennial Streams	69.2	43.0	0.013	0.022	8.10	52.94
  Intermittent Streams	5238.8	3255.9	1.022	1.645	98.86	95.29
  Canals	2.0	1.2	0.000	0.001	40.79	37.65
  1° roads	0.8	0.5	0.000	0.000	35.15	51.76
  2° roads	0.0	0.0	0.000	0.000	15.35	29.41
  3° roads	56.5	35.1	0.011	0.018	12.03	31.76
  4° roads	2680.8	1666.1	0.523	0.842	8.29	30.59
  Total Roads	2738.1	1701.7	0.534	0.860	7.58	25.88
  Railroads	66.8	41.5	0.013	0.021	23.16	55.29
  Pipes and Powerlines	175.2	108.9	0.034	0.055	56.09	77.65

  
  Of the natural water in this HUC, 98.67% (by length) is intermittent [% in USA = 96.68, % in Region = 65.88]

  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