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Report Year: 2016
Fogle Lake, Ringgold County
Summary Data Table
Parameter6/13/20168/2/20169/14/20162016201520142013201220112010200920072006200520042003200220012000
Lake Depth (m)6.96.74.86.16.96.46.45.96.96.86.4--8.07.07.67.27.67.3
Thermocline Depth (m)3.43.23.0N/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A
Secchi Disk Depth (m)1.10.60.40.70.81.00.70.50.61.11.7--1.21.01.31.21.70.8
Temperature(oC)25.825.121.024.023.922.323.024.624.624.225.2--24.522.023.926.223.925.3
Dissolved Oxygen (mg/L)6.93.86.55.79.26.87.98.67.26.77.3--7.56.88.910.36.59.2
Dissolved Oxygen Saturation (%)84467367.7110.481.891.5104.888.080.288.6--89.677.7103.0126.376.9111.8
Specific Conductivity (μS/cm)230.0210.0190.0210.0220.0223.3240.0233.3213.3183.3223.3--264.9257.4270.4251.1249.2275.6
Turbidity (NTU)6.217.517.713.810.49.913.516.927.98.846.0--7.218.512.56.916.213.7
Chlorophyll a (μg/L)22.448.053.941.434.426.832.652.741.812.910.7--50.322.527.424.126.09.0
Total Phosphorus as P (μg/L)57.176.8100.678.1878752.459.290.847.641.4--5059525047-
SRP as P (μg/L)<2.8<2.8<2.8<2.8<4.314.8<14<10<11<8<9--<11.8<1<1--
TKN (mg/L)0.721.241.551.171.331.781.491.811.490.91---------
Total Dissolved Solids (g/L)0.20.10.10.10.10.10.20.20.1----------
Total Nitrogen as N (mg/L)----------1.0--0.931.521.230.851.361.46
(Phenate)Ammonia Nitrogen (NH3 + NH4+) as N (μg/L)<0.69.85145.70494624995127<145<136<130--------
(Phenate)Ammonia Nitrogen (NH3) as N (un-ionized)(μg/L)004132<PRL<PQL<PQL<PQL<130--------
Nitrate + Nitrite (NO3 + NO2) as N (mg/L)<0.07<0.07<0.07<0.070.170.120<0.06<0.4<0.5---0.400.210.120.130.290.38
TN:TP ratio----------24--2026251743-
pH7.98.07.87.98.18.08.08.28.37.98.2--8.08.08.18.38.27.4
Alkalinity as CaCO3 (mg/L)95958893991011001008485110--12212093121119126
Silica as Si (mg/L)-------------2.183.771.831.79--
Dissolved Organic Carbon (mg/L)23.0926.5024.5724.7215.2097.5398<6.47--7.466.3514.4511.87--
Inorganic Suspended Solids (mg/L)255433<3.2764<4--154653
Volatile Suspended Solids (mg/L)57118867129<9<8--454635
Total Suspended Solids (mg/L)71216121199191598--41081088
Carlson Trophic State Index (Secchi)*5969736564606569675952--576056585363
Carlson Trophic State Index (Chl a)*6169706765636569675654--696163626352
Carlson Trophic State Index (TP)*6267716768696163696058--6163616160-
*Index values generally range between 0 and 100, with increasing values indicating more eutrophic conditions.
       
 
 
 
Water Column Profiles
6/13/20168/2/20169/14/2016

Contact Limnology Laboratory, Iowa State University