Thomas Roberts Pond [14-TRP-10]

Name	Thomas Roberts Pond
Code	14-TRP-10
County	Winneshiek
Latitude	43.3074
Longitude	-91.7863
Sampled by	City of Decorah Water Department

Sampling Location

Yearly Averages for Thomas Roberts Pond [14-TRP-10] Download in CSV format
(with comparison to all locations in the watershed)

	P mg/L	N mg/L	Ammonia mg/L	Atrazine ppb	Fecal Coliform /100mL
All Years	0.19 (0.12)	<0.1 (5.6)	<0.05 (0.07)	0.18 (0.14)	<10 (13321)
2002 Mean	0.19 (0.21)	<0.1 (5.9)	<0.05 (0.15)	0.18 (0.09)	<10 (11159)
2001 Mean	(0.14)	(12.6)	(0.1)	(0.54)	(10137)
2000 Mean	(0.41)	(4.8)	(0.12)	(0.21)	(18412)

*All averages are arithmetic means, except for E. Coli and/or Fecal Coliform, which are calculated as geometric means. For purposes of calculating a mean, values that exceed the measurement limit (e.g., <0.05, 60+, <33) are assumed to be 20% greater or less than their limit (e.g., 0.04, 72, 26.4).

Water Quality Standards

For 0.0% of the data records, Nitrate+Nitrite exceeded 10 mg/L. 10 mg/L represents the U.S. Public Health Service recommended limit of 10 mg/L NO3-N (nitrate-nitrogen) in drinking water.

Download in CSV format

Monthly Water Sampling Data for Thomas Roberts Pond [14-TRP-10]

Sample Date	Time	by	P mg/L	N mg/L	Ammonia mg/L	Atrazine ppb	Fecal Coliform /100mL
05/02/02	14:05		0.19	<0.1	<0.05	0.18	<10.0

One-time Rainfall Event Samples for Thomas Roberts Pond (Not part of above statistics)

Sample Date	Time	by	P mg/L	N mg/L	Ammonia mg/L	Atrazine ppb	Fecal Coliform /100mL
07/29/02	19:00		0.07	0.2	<0.05	<0.05	1500.0
06/04/02	21:05		0.11	0.4	0.29	0.55	1500.0
06/15/01	14:30		<0.1	<0.1	<0.1	0.95	410.0
04/03/01	16:00		<0.1	0.3	<0.1	<0.05	<10.0
08/17/00	14:25		0.2	0.3	0.2	0.06	8000.0
07/05/00	14:15		0.2	0.4	0.7	0.18	64.0
05/18/00	19:35		0.1	0.4	0.5	1.3	310.0
02/24/00	14:55		0.8	0.8	0.5	<0.05	250.0

Nearby Sampling Locations