| Site ID: |
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497 |
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Lat. |
35.9108 |
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USA |
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Arkansas |
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| River: |
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Black |
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Long. |
-91.1915 |
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| Site name: |
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Elgin Ferry |
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Contributing
area: |
21422 |
km2 |
Ratio to Comparison
Station: |
0.92 |
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| Latest measurement: |
12-Nov-09 |
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Mean annual
runoff: |
959 |
mm |
(2003-2007) |
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| Hydrologic status: |
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2 |
Normal flow |
Total runoff
this year: |
1325 |
mm |
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| Latest M/C ratio: |
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1.76 |
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Seven day
total: |
2 |
mm |
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| Estimated current discharge: |
2972 |
m3/sec |
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Percent of
mean 7-day total: |
679.3 |
% |
(today's value compared to
mean for same period, 2003-2007) |
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| Ice-cover determination: |
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5 yr
recurrence flood: |
4839 |
m3/sec |
(from Log Pearson III
analysis) |
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| Status Codes: 1 = Low
flow, 2 = Normal flow, 3 = Flood, 4 = Major Flood |
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4737 |
m3/sec |
(from Gumbel Extreme Value
analysis) |
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| Comparison Station Information: |
Tokwe
Confluence D/s C/s (1495240) |
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Contributing
Area: |
7280 |
sq mi |
23237 |
sq km |
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| (Data from this gaging station are used for the calibration to
discharge, with an adjustment for different contributing areas) |
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| Notes: |
Comparison station is
placeholder, only; this site is not yet calibrated to actual discharge |
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| Discharge and runoff, based on satellite remote sensing (NASA
AMSR-E data) |
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| (For U.S, sites, nearby ground station discharge may also be
shown) |
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2008-Present |
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2002-Present |
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| Annual |
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|
Monthly Total Runoff (mm),
computed from above satellite-based discharge data |
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| Runoff |
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| (mm) |
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Jan |
Feb |
Mar |
April |
May |
June |
July |
Aug |
Sept |
Oct |
Nov |
Dec |
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| 246 |
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2002 |
no data |
no data |
no data |
no data |
no data |
no data |
no data |
1.8 |
15.9 |
13.4 |
67.4 |
148.0 |
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| 1053 |
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2003 |
109.7 |
135.2 |
130.7 |
88.9 |
280.2 |
50.2 |
4.9 |
1.0 |
3.6 |
15.0 |
69.2 |
164.3 |
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| 1131 |
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2004 |
140.2 |
99.1 |
128.6 |
101.9 |
220.9 |
51.5 |
8.5 |
0.4 |
0.8 |
40.2 |
159.5 |
179.4 |
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| 1059 |
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2005 |
274.0 |
159.9 |
110.9 |
110.5 |
44.7 |
55.3 |
2.6 |
2.9 |
7.5 |
5.5 |
117.6 |
167.3 |
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| 576 |
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2006 |
65.5 |
52.2 |
126.9 |
45.4 |
170.3 |
60.3 |
4.4 |
1.2 |
8.5 |
41.1 |
0.0 |
0.0 |
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| 975 |
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2007 |
283.2 |
121.7 |
97.1 |
82.9 |
174.8 |
38.0 |
7.5 |
0.5 |
5.6 |
18.9 |
26.3 |
119.1 |
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| 1325 |
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2008 |
87.0 |
114.5 |
325.5 |
468.9 |
208.4 |
23.7 |
22.4 |
0.4 |
0.7 |
0.4 |
12.4 |
60.6 |
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| 1152 |
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2009 |
44.8 |
123.1 |
120.0 |
125.2 |
299.9 |
89.7 |
47.1 |
8.7 |
9.1 |
79.8 |
204.7 |
0.0 |
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| Discharge is estimated directly via a rating equation from
the remote sensing data (M/C ratio) shown below. |
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