Purgatoire -- Cataloging Unit 11020010

• Upper Arkansas Subregion 1102
  
• Arkansas-White-Red Region 11 (There are 173 cataloging units in this region.)
  The state composition by area is 96.4% Colorado, 3.6% New Mexico.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 8922.7 km² ( 3446.6 mi² ) [% in USA = 97.11, % in Region = 99.42]
  The area from the USGS is 3440 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 1524)

  IV. Elevation Analysis

  This analysis is based on 3566364 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 1818.9 m ( 5967.4 ft ) [% in USA = 90.15, % in Region = 95.38]
  The elevation standard deviation is 424.9 m ( 1394.0 ft ) [% in USA = 93.13, % in Region = 97.11]
  The coefficient of variation is 23.4 %.
  The vertical relief is 3019.8 m ( 9907.4 ft ) [% in USA = 98.44, % in Region = 100.00]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	1186.0	1371.0	1504.4	1600.9	1676.0	1711.0	1766.8	1869.5	2144.4	2378.0	4205.8
  feet	3891.0	4498.0	4935.6	5252.2	5498.6	5613.4	5796.5	6133.5	7035.3	7801.7	13798.4

  

  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	57.1	35.5	0.006	0.010	9.52	7.51
  Intermittent Shoreline	52.3	32.5	0.006	0.009	78.92	65.32
  Perennial Streams	825.8	513.2	0.093	0.149	24.49	34.10
  Intermittent Streams	3679.1	2286.5	0.412	0.663	59.26	41.04
  Canals	227.2	141.2	0.025	0.041	77.03	89.60
  1° roads	49.6	30.8	0.006	0.009	49.03	54.34
  2° roads	147.3	91.5	0.017	0.027	37.14	19.08
  3° roads	168.2	104.6	0.019	0.030	19.85	9.25
  4° roads	4884.5	3035.7	0.547	0.881	9.10	0.58
  Total Roads	5249.6	3262.6	0.588	0.947	9.38	0.58
  Railroads	277.3	172.3	0.031	0.050	40.60	32.37
  Pipes and Powerlines	3.2	2.0	0.000	0.001	9.81	9.83

  
  Of the natural water in this HUC, 80.87% (by length) is intermittent [% in USA = 79.16, % in Region = 69.36]

  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