Thompson -- Cataloging Unit 10280102

• Grand Accounting Unit 102801
  
• Chariton-Grand Subregion 1028
  
• Missouri Region 10 (There are 310 cataloging units in this region.)
  The state composition by area is 50.0% Iowa, 50.0% Missouri.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 5726.1 km² ( 2211.8 mi² ) [% in USA = 84.84, % in Region = 79.68]
  The area from the USGS is 2200 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 1018)

  IV. Elevation Analysis

  This analysis is based on 2285130 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 305.9 m ( 1003.6 ft ) [% in USA = 39.55, % in Region = 6.77]
  The elevation standard deviation is 44.4 m ( 145.7 ft ) [% in USA = 35.58, % in Region = 22.90]
  The coefficient of variation is 14.5 %.
  The vertical relief is 216.9 m ( 711.6 ft ) [% in USA = 31.60, % in Region = 20.00]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	204.0	244.0	265.2	276.9	290.4	305.0	318.7	332.2	350.1	366.0	420.9
  feet	669.3	800.5	870.1	908.5	952.7	1000.6	1045.6	1089.9	1148.6	1200.8	1380.9

  

  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	417.6	259.5	0.073	0.117	45.62	64.19
  Intermittent Shoreline	14.4	8.9	0.003	0.004	67.41	40.97
  Perennial Streams	1332.6	828.2	0.233	0.374	45.48	74.52
  Intermittent Streams	4112.6	2556.0	0.718	1.156	88.54	69.68
  Canals	0.0	0.0	0.000	0.000	35.62	43.55
  1° roads	52.2	32.4	0.009	0.015	53.91	70.00
  2° roads	264.1	164.2	0.046	0.074	78.21	88.06
  3° roads	759.0	471.8	0.133	0.213	81.81	91.94
  4° roads	5733.5	3563.4	1.001	1.611	36.52	62.58
  Total Roads	6808.8	4231.7	1.189	1.913	41.97	69.03
  Railroads	208.6	129.6	0.036	0.059	45.29	64.84
  Pipes and Powerlines	179.4	111.5	0.031	0.050	52.34	71.29

  
  Of the natural water in this HUC, 70.22% (by length) is intermittent [% in USA = 70.16, % in Region = 41.61]

  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