St. Vrain -- Cataloging Unit 10190005

• South Platte Subregion 1019
  
• Missouri Region 10 (There are 310 cataloging units in this region.)
  The state composition by area is 100.0% Colorado.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 2571.8 km² ( 993.4 mi² ) [% in USA = 35.86, % in Region = 26.77]
  The area from the USGS is 978 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 2445)

  IV. Elevation Analysis

  This analysis is based on 1027223 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 2182.9 m ( 7161.7 ft ) [% in USA = 96.35, % in Region = 94.84]
  The elevation standard deviation is 655.1 m ( 2149.3 ft ) [% in USA = 99.15, % in Region = 98.71]
  The coefficient of variation is 30.0 %.
  The vertical relief is 2882.0 m ( 9455.3 ft ) [% in USA = 98.20, % in Region = 99.68]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	1447.0	1520.7	1554.0	1598.6	1704.2	2009.8	2362.5	2569.5	2797.0	3169.0	4329.0
  feet	4747.3	4989.1	5098.4	5244.7	5591.1	6593.8	7750.9	8430.0	9176.4	10396.9	14202.6

  

  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	286.2	177.9	0.111	0.179	59.92	81.61
  Intermittent Shoreline	3.7	2.3	0.001	0.002	59.07	32.58
  Perennial Streams	1220.8	758.8	0.475	0.764	79.30	96.45
  Intermittent Streams	58.1	36.1	0.023	0.036	9.47	0.97
  Canals	664.7	413.1	0.258	0.416	97.92	100.00
  1° roads	35.7	22.2	0.014	0.022	60.97	77.10
  2° roads	91.2	56.7	0.035	0.057	65.04	76.77
  3° roads	309.8	192.5	0.120	0.194	78.30	90.65
  4° roads	3740.3	2324.6	1.454	2.340	75.84	96.77
  Total Roads	4177.0	2596.0	1.624	2.613	76.50	96.13
  Railroads	276.4	171.8	0.107	0.173	89.34	96.45
  Pipes and Powerlines	10.6	6.6	0.004	0.007	15.96	22.90

  
  Of the natural water in this HUC, 3.94% (by length) is intermittent [% in USA = 9.62, % in Region = 0.65]

  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