Harford County

Recreational Water Sampling Geometric Mean History


2025 Geometric Mean History

Sample Locations

Sample Taken Geometric Mean (cfu) Indicator Threshold Level:

Impact Within 24hrs

Kilgore Falls

5/19/25

6/2/25

6/16/25

6/30/25

7/14/25

7/28/25

8/11/25

8/25/25

99 cfu

43 cfu

192 cfu

183 cfu

273 cfu

387 cfu

70 cfu

2420 cfu

E. coli 235 cfu None

None

Rain

None

Rain

Rain

None

Rain

Wilsons Picnic Area

5/19/25

6/2/25

6/16/25

6/30/25

7/14/25

7/28/25

8/11/25

8/25/25

92 cfu

73 cfu

223 cfu

194 cfu

63 cfu

315 cfu

126 cfu

216 cfu

E. coli

235 cfu

None

None

Rain

None

Rain

Rain

None

Rain

Hills Grove Picnic Area

5/19/25

6/2/25

6/16/25

6/30/25

7/14/25

7/28/25

8/11/25

8/25/25

124 cfu

85 cfu

296 cfu

353 cfu

74 cfu

339 cfu

183 cfu

232 cfu

E. coli

235 cfu

None

None

Rain

None

Rain

Rain

None

Rain

Mariner Point Park (West)

5/20/25

6/3/25

6/17/25

7/1/25

7/15/25

7/29/25

8/12/25

8/26/25

48 cfu

515 cfu

242 cfu

698 cfu

103 cfu

43 cfu

126 cfu

38 cfu

Enterococci

104 cfu

Low tide

Incoming Tide

Rain/Incoming Tide

Rain/High tide

Rain

Rain/High Tide

None

High Tide

Mariner Point Park (South)

5/20/25

6/3/25

6/17/25

7/1/25

7/15/25

7/29/25

8/12/25

8/26/25

10 cfu

20 cfu

52 cfu

2010 cfu

182 cfu

624 cfu

102 cfu

275 cfu

Enterococci

104 cfu

Low tide

Incoming Tide

Rain/Incoming Tide

Rain/High tide

Rain

Rain/High Tide

None

High Tide

Mariner Point Park (East)

5/20/25

6/3/25

6/17/25

7/1/25

7/15/25

7/29/25

8/12/25

8/26/25

78 cfu

63 cfu

159 cfu

312 cfu

432 cfu

261 cfu

16 cfu

93 cfu

Enterococci

104 cfu

Low tide

Incoming Tide

Rain/Incoming Tide

Rain/High tide

Rain

Rain/High Tide

None

High Tide

Copenhaver Park

5/20/25

6/3/25

6/17/25

7/1/25

7/15/25

7/29/25

8/12/25

8/26/25

226 cfu

142 cfu

212 cfu

90 cfu

1803 cfu

90 cfu

56 cfu

16 cfu

Enterococci

104 cfu

Low tide

Incoming Tide

Rain/Incoming Tide

Rain/High tide

Rain

Rain/High Tide

None

High Tide

Flying Point Park

5/20/25

6/3/25

6/17/25

7/1/25

7/15/25

7/29/25

8/12/25

8/26/25

25 cfu

16 cfu

45 cfu

1188 cfu

74 cfu

26 cfu

22 cfu

13 cfu

Enterococci

104 cfu

Incoming tide

Incoming Tide

Rain/Incoming Tide

Rain/High tide

Rain

Rain/High Tide

None

High Tide

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