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Report Year: 2016
Manteno Park Pond, Shelby County
Summary Data Table
Parameter5/18/20166/27/20168/16/20162016201520142013201220112010200920072006200520042003200220012000
Lake Depth (m)2.52.22.22.32.32.32.12.32.32.52.5--2.72.62.62.52.92.7
Thermocline Depth (m)Nil1.51.7N/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A
Secchi Disk Depth (m)2.00.50.71.10.81.11.51.31.01.01.4--1.41.21.01.91.71.5
Temperature(oC)15.327.624.522.521.021.122.323.421.421.823.0--23.722.724.025.722.325.3
Dissolved Oxygen (mg/L)15.410.84.910.49.19.09.18.211.18.29.7--7.69.910.98.47.87.3
Dissolved Oxygen Saturation (%)15413759116.6102.4101.0104.496.0124.689.2113.4--88.8114.3129.6102.586.188.7
Specific Conductivity (μS/cm)490.0490.0480.0486.7500.0403.3426.7426.7416.7483.3426.7--408.2386.5377.2439.1392.1360.8
Turbidity (NTU)3.0-9.16.18.08.95.94.89.73.18.4--15.253.013.54.06.44.4
Chlorophyll a (μg/L)2.867.734.535.032.073.524.628.012.071.439.3--82.545.517.114.016.410.7
Total Phosphorus as P (μg/L)42.9143.292.292.78214671.597.1102.3197.598.2--110839357122-
SRP as P (μg/L)<2.84.64.52.9<4.3<5.6<14<1018.58.3<9--14.95.64.03.5--
TKN (mg/L)<0.51.731.001.011.191.541.101.740.791.37---------
Total Dissolved Solids (g/L)0.30.30.30.30.30.30.30.30.3----------
Total Nitrogen as N (mg/L)----------0.9--0.961.070.970.831.261.32
(Phenate)Ammonia Nitrogen (NH3 + NH4+) as N (μg/L)22.75<0.66.95933<268432<145<136<130--------
(Phenate)Ammonia Nitrogen (NH3) as N (un-ionized)(μg/L)10002011<PQL<PQL<PQL<130--------
Nitrate + Nitrite (NO3 + NO2) as N (mg/L)3.32<0.07<0.0710.720.12<0.14<0.06<0.4<0.5---0.160.190.120.120.230.38
TN:TP ratio----------9--913111510-
pH8.38.67.98.38.28.18.48.18.27.97.9--8.08.78.58.58.38.2
Alkalinity as CaCO3 (mg/L)206212210209225193192203199213200--188162124183187165
Silica as Si (mg/L)-------------3.023.261.582.82--
Dissolved Organic Carbon (mg/L)38.6741.2751.0643.6719.3865.186<7.6<6.4<6.2--3.855.809.5510.33--
Inorganic Suspended Solids (mg/L)<0.833244776168--546132
Volatile Suspended Solids (mg/L)4155849871213<8--874442
Total Suspended Solids (mg/L)4188108121515182915--101210574
Carlson Trophic State Index (Secchi)*5070655962585456606055--555760515354
Carlson Trophic State Index (Chl a)*4172656565736263557267--746858565854
Carlson Trophic State Index (TP)*5876696968766670718070--7268696373-
*Index values generally range between 0 and 100, with increasing values indicating more eutrophic conditions.
       
 
 
 
Water Column Profiles
5/18/20166/27/20168/16/2016

Contact Limnology Laboratory, Iowa State University