Harford County

Notice 8/5/26 1:50pm: Our system used to print birth and death certificates is currently down, therefore our vital records program will be closed for the remainder of the day. We apologize for any inconvenience this may cause.

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Recreational Water Sampling Geometric Mean History


2026 Geometric Mean History

Sample Locations

Sample Taken Geometric Mean (cfu) Indicator Threshold Level:

Impact Within 24-48hrs

Kilgore Falls

5/18/26

6/1/26

6/15/26

6/29/26

7/13/26

7/27/26

8/10/26

8/24/26

8/31/26

32 cfu

41 cfu

352 cfu

120 cfu

178 cfu

301 cfu

 

 

 

E. coli 235 cfu Bathers at lower falls. No rain within 72 hours

No rain in last 72 hours, bathers and dogs

Rain

Rain

 

 

 

Wilsons Picnic Area

5/18/26

6/1/26

6/15/26

6/29/26

7/13/26

7/27/26

8/10/26

8/24/26

8/31/26

165 cfu

154 cfu

1153 cfu

170 cfu

164 cfu

122 cfu

 

 

 

E. coli

235 cfu

Bathers and trash present, water turbid, No rain within 72 hours

No rain in last 72 hours

Rain

Rain

 

 

 

Hills Grove Picnic Area

5/18/26

6/1/26

6/15/26

6/29/26

7/13/26

7/27/26

8/10/26

8/24/26

8/31/26

558 cfu

190 cfu

2121 cfu

205 cfu

139 cfu

470 cfu

 

 

 

E. coli

235 cfu

Bathers at site 1, water turbid, No rain within 72 hours

No rain in last 72 hours, dogs and bathers in water

Rain

Rain

 

 

 

Mariner Point Park

(West)

5/19/26

6/2/26

6/16/26

6/30/26

7/14/26

7/28/26

8/11/26

8/25/26

9/1/26

33 cfu

10 cfu

85 cfu

18 cfu

64 cfu

10 cfu

 

 

 

Enterococci

104 cfu

Outgoing tide, no rain in last 72 hours

Outgoing tide, no rain in last 72 hours

Outgoing tide, Rain

Outgoing tide

Outgoing tide

Outgoing tide

 

 

 

Mariner Point Park (South)

5/19/26

6/2/26

6/16/26

6/30/26

7/14/26

7/28/26

8/11/26

8/25/26

9/1/26

13 cfu

69 cfu

31 cfu

197 cfu

55 cfu

97 cfu

 

 

 

Enterococci

104 cfu

Outgoing tide, no rain in last 72 hours

Outgoing tide, no rain in last 72 hours

Outgoing tide, Rain

Outgoing tide

Outgoing tide

Outgoing tide

 

 

 

Mariner Point Park

(East)

5/19/26

6/2/26

6/16/26

6/30/26

7/14/26

7/28/26

8/11/26

8/25/26

9/1/26

25 cfu

92 cfu

460 cfu

25 cfu

46 cfu

39 cfu

 

 

 

Enterococci

104 cfu

Outgoing tide, no rain in last 72 hours

Outgoing tide, no rain in last 72 hours, film on water, possible pollen build up

Outgoing tide, Rain

Outgoing tide

Outgoing tide

 

 

 

 

Copenhaver Park

5/19/26

6/2/26

6/16/26

6/30/26

7/14/26

7/28/26

8/11/26

8/25/26

9/1/26

135 cfu

181 cfu

458 cfu

79 cfu

148 cfu

159 cfu

 

 

 

Enterococci

104 cfu

Low tide, no rain in last 72 hours

Outgoing tide, no rain in last 72 hours

Outgoing tide, Rain

Outgoing tide

Outgoing tide

Outgoing tideOutgoing tide

 

 

Flying Point Park

5/19/26

6/2/26

6/16/26

6/30/26

7/14/26

7/28/26

8/11/26

8/25/26

9/1/26

42 cfu

22 cfu

32 cfu

32 cfu

21 cfu

14 cfu

 

 

 

Enterococci

104 cfu

Low tide, no rain in last 72 hours

Outgoing tide, no rain in last 72 hours

Outgoing tide, Rain

Outgoing tide

Outgoing tide

Outgoing tide

 

 

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