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USGS Daily Statistics for South Carolina

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The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 021473426 TOOLS FORK CREEK NEAR ROCK HILL, SC


York County, South Carolina
Hydrologic Unit Code 03050103
Latitude  34°57'23.33", Longitude  81°06'21.10" NAD83
Drainage area 9.60  square miles
Gage datum 566.52 feet above NAVD88
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 1997-10-01 -> 2025-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 5.8 8.3 24 6.6 8.2 2.4 1.2 5.8 3.4 1 2.5 5.3
2 6.4 8.8 25 5.7 7.8 2 1.2 2.3 6.8 0.98 11 7.6
3 14 8.9 12 5.8 4.7 4.4 0.77 1.4 3.6 2.1 3.6 5.4
4 20 9.3 12 5.8 3.9 3.3 0.95 1.3 8.4 0.86 2.5 3.1
5 7.4 19 9.7 17 8.4 8.3 0.86 0.93 3.2 0.93 1.7 3.2
6 9.3 42 9.2 8.3 12 6 1.5 1.7 0.96 0.73 2.5 2.8
7 6.8 11 15 8.4 4.4 4.2 1.3 0.88 0.97 1.1 2.2 2.6
8 8.9 6.1 8.5 10 3.8 2.7 1.8 26 0.97 2.6 2.1 3.1
9 33 4.8 15 8.9 5.5 2.6 1.4 1.9 0.71 1.6 7.7 15
10 8.2 4.5 7.7 6.9 3.5 2.9 0.85 1.2 0.78 2.9 4.6 7.1
11 12 4.9 5.6 6 3.6 2.9 1.4 1.2 0.74 11 11 9.8
12 12 13 14 9.8 3.1 3.1 1.3 0.88 0.99 3.6 38 7.7
13 14 8.9 7.7 39 2.7 2.4 3.3 1.3 3 1.4 6.5 5.5
14 11 14 6.3 6.9 4.3 2.7 1.5 1.5 3.8 1.2 3.2 7
15 7.2 11 9.4 13 7.8 1.6 3.3 2.9 1.1 1.6 2.4 7.9
16 5.7 11 14 8.3 4.6 1.9 1.5 1.2 6.7 1.1 6.3 5.7
17 15 6.9 11 5.7 6.2 1.9 1.1 1.3 4.4 1.1 3.9 7.1
18 11 7.9 8.1 6 3.8 1.2 1 1.2 2.2 1.2 2.4 5.7
19 5.5 11 6.9 30 3.9 1.2 0.7 1.7 1.3 1.4 9.1 5.7
20 6.9 8.5 12 18 4.3 2.3 1 0.92 0.94 1.3 2.8 7.9
21 7.9 7 11 6.9 6.8 2.6 2.5 2.2 1 1.1 3.9 7
22 9.5 7.7 6.5 5.1 3.8 1.6 2.1 1.5 2 0.86 19 18
23 14 11 6.1 8.3 6.2 1.1 3.4 0.91 8.5 1.2 5.8 37
24 18 8.7 6.4 12 5.4 1 5.4 1.2 1.3 1.2 4.3 18
25 23 8.5 13 7.1 6.3 1.5 3.5 3.8 5.1 1 3.1 22
26 8.2 12 6.1 4.9 3 1.7 2.2 20 14 2 5.6 18
27 12 8.2 9.5 5.9 4 3.8 0.91 15 22 2.4 5.6 9.2
28 23 8.1 11 12 4.7 3.7 1.1 1.8 2.1 2.5 3.2 6
29 5.9 5.5 13 8.2 5.9 1.6 1.5 1 1.3 1.6 3.4 15
30 6.5   9.8 20 3.7 1.5 1.1 1.1 1.4 1.6 9.2 16
31 6.9   8.7   3.2   1.8 3.3   1.5   7.4