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Report Year: 2016
Lake Sugema, Van Buren County
Summary Data Table
Parameter5/25/20167/12/20168/23/20162016201520142013201220112010200920072006200520042003200220012000
Lake Depth (m)7.77.78.07.88.07.77.87.18.07.97.9--8.88.78.58.58.39.2
Thermocline Depth (m)2.55.24.0N/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A
Secchi Disk Depth (m)1.60.50.60.91.11.20.70.70.80.50.7--1.41.21.40.81.61.4
Temperature(oC)19.925.325.223.524.524.923.524.924.025.523.5--26.723.824.627.422.025.5
Dissolved Oxygen (mg/L)11.47.37.88.812.28.89.18.57.18.17.1--10.58.18.48.86.87.9
Dissolved Oxygen Saturation (%)1258895102.8147.4105.7107.1102.683.098.183.4--130.796.1101.9114.874.296.6
Specific Conductivity (μS/cm)210.0220.0180.0203.3180.0173.3163.3183.3156.7156.7186.7--216.2201.9189.9324.7176.7200.6
Turbidity (NTU)2.28.713.28.07.67.313.67.711.912.311.8--10.09.18.516.26.031.9
Chlorophyll a (μg/L)16.839.451.836.057.436.636.035.324.823.829.3--69.029.621.536.713.93.4
Total Phosphorus as P (μg/L)38.551.447.945.9775671.847.970.377.459.7--4844395244-
SRP as P (μg/L)<2.8<2.8<2.8<2.8<4.3<5.6<14<10<11<8<9--<11.21.61.5--
TKN (mg/L)0.911.041.191.051.351.051.131.360.720.89---------
Total Dissolved Solids (g/L)0.10.10.10.10.10.10.10.10.1----------
Total Nitrogen as N (mg/L)----------1.1--0.981.591.010.961.341.12
(Phenate)Ammonia Nitrogen (NH3 + NH4+) as N (μg/L)32.1012.40<0.67693044<14<145<136<130--------
(Phenate)Ammonia Nitrogen (NH3) as N (un-ionized)(μg/L)21-5035<PRL<PQL<PQL<PQL<130--------
Nitrate + Nitrite (NO3 + NO2) as N (mg/L)0.17<0.07<0.07<0.070.120.1200<0.4<0.5---0.130.150.150.150.210.23
TN:TP ratio----------19--2134282030-
pH8.28.48.68.48.58.78.68.38.58.28.2--8.28.38.48.77.47.6
Alkalinity as CaCO3 (mg/L)7883818178746373686379--9483587778110
Silica as Si (mg/L)-------------2.641.741.873.07--
Dissolved Organic Carbon (mg/L)19.3020.9422.8921.0412.7877.017<7.6<6.47--8.465.7110.7411.52--
Inorganic Suspended Solids (mg/L)33223<2.1<3.2257<4--332443
Volatile Suspended Solids (mg/L)488787878<9<8--656754
Total Suspended Solids (mg/L)710109118129141110--9781087
Carlson Trophic State Index (Secchi)*5469676158576665646965--555755645455
Carlson Trophic State Index (Chl a)*5867696670666666626264--726461665643
Carlson Trophic State Index (TP)*5761605967626660656763--6059576159-
*Index values generally range between 0 and 100, with increasing values indicating more eutrophic conditions.
       
 
 
 
Water Column Profiles
5/25/20167/12/20168/23/2016

Contact Limnology Laboratory, Iowa State University