Upper Big Blue -- Cataloging Unit 10270201

• Big Blue Accounting Unit 102702
  
• Kansas Subregion 1027
  
• Missouri Region 10 (There are 310 cataloging units in this region.)
  The state composition by area is 100.0% Nebraska.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 2850.0 km² ( 1100.9 mi² ) [% in USA = 43.53, % in Region = 35.48]
  The area from the USGS is 1080 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 168)

  IV. Elevation Analysis

  This analysis is based on 1137429 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 506.7 m ( 1662.4 ft ) [% in USA = 56.80, % in Region = 24.19]
  The elevation standard deviation is 28.4 m ( 93.2 ft ) [% in USA = 20.65, % in Region = 6.13]
  The coefficient of variation is 5.6 %.
  The vertical relief is 143.0 m ( 469.2 ft ) [% in USA = 17.01, % in Region = 2.90]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	439.0	472.3	485.0	488.2	495.0	503.0	509.0	519.0	533.0	549.0	582.0
  feet	1440.3	1549.5	1591.2	1601.7	1624.0	1650.2	1669.9	1702.7	1748.7	1801.2	1909.4

  

  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	34.0	21.1	0.012	0.019	13.97	11.94
  Intermittent Shoreline	8.2	5.1	0.003	0.005	69.35	44.52
  Perennial Streams	276.5	171.8	0.097	0.156	24.96	40.65
  Intermittent Streams	1924.7	1196.2	0.675	1.087	86.31	66.13
  Canals	0.0	0.0	0.000	0.000	35.62	43.55
  1° roads	0.0	0.0	0.000	0.000	30.84	48.39
  2° roads	112.2	69.8	0.039	0.063	70.11	82.58
  3° roads	153.1	95.1	0.054	0.086	49.69	73.87
  4° roads	3720.8	2312.5	1.306	2.101	64.80	92.58
  Total Roads	3986.0	2477.3	1.399	2.250	61.20	90.32
  Railroads	208.3	129.5	0.073	0.118	75.51	89.03
  Pipes and Powerlines	86.4	53.7	0.030	0.049	51.54	69.68

  
  Of the natural water in this HUC, 86.16% (by length) is intermittent [% in USA = 84.84, % in Region = 75.48]

  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