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Report Year: 2016
Poll Miller Park Lake, Lee County
Summary Data Table
Parameter5/25/20167/12/20168/26/20162016201520142013201220112010200920072006200520042003200220012000
Lake Depth (m)7.77.57.87.77.77.97.76.98.08.28.18.18.08.58.58.78.18.57.2
Thermocline Depth (m)2.84.54.0N/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A
Secchi Disk Depth (m)2.71.91.21.91.52.21.41.40.80.71.12.71.82.82.12.01.62.41.5
Temperature(oC)21.826.426.224.824.225.725.425.626.026.523.526.426.227.323.923.928.324.325.0
Dissolved Oxygen (mg/L)10.28.011.19.88.09.410.08.09.910.58.47.97.69.69.48.510.910.98.4
Dissolved Oxygen Saturation (%)116100137117.595.3115.5121.497.7121.4129.898.697.794.0121.3112.1101.2140.1130.6100.8
Specific Conductivity (μS/cm)380.0390.0320.0363.3320.0303.3313.3360.0310.0256.7286.7340.0396.9392.9344.0291.7320.1295.8274.5
Turbidity (NTU)6.93.27.55.84.82.65.04.49.412.610.05.35.85.07.131.717.26.014.3
Chlorophyll a (μg/L)2.86.414.98.06.214.012.37.829.058.612.35.514.521.220.517.523.95.419.9
Total Phosphorus as P (μg/L)18.124.924.822.6342730.727.752.656.941.226333836503732-
SRP as P (μg/L)<2.8<2.8<2.8<2.8<4.3<5.6<14<10<11<8<9<1<1<11.63.9<1--
TKN (mg/L)0.62<0.50.620.530.54<0.50.670.69<0.50.85---------
Total Dissolved Solids (g/L)0.30.30.20.20.20.20.20.20.2----------
Total Nitrogen as N (mg/L)----------0.80.680.800.801.031.000.930.941.56
(Phenate)Ammonia Nitrogen (NH3 + NH4+) as N (μg/L)20.3019.45<0.68<26<26<10<14<145<136<130--------
(Phenate)Ammonia Nitrogen (NH3) as N (un-ionized)(μg/L)13-31-11<PRL<PQL<PQL<PQL<130--------
Nitrate + Nitrite (NO3 + NO2) as N (mg/L)0.12<0.07<0.07<0.070.120.12<0.140<0.4<0.5-0.120.120.170.160.190.190.190.50
TN:TP ratio----------2030242129232638-
pH8.28.48.58.48.58.38.68.28.58.68.28.68.58.48.58.48.88.27.2
Alkalinity as CaCO3 (mg/L)1451511361441201191181371209111313313914412882109111135
Silica as Si (mg/L)-------------1.691.801.822.74--
Dissolved Organic Carbon (mg/L)30.5231.9633.3431.9413.6056.086<7.6<6.4<6.26.406.126.814.919.749.98--
Inorganic Suspended Solids (mg/L)12323<2.1<3.23846122281444
Volatile Suspended Solids (mg/L)1232243<3.2<811<854445734
Total Suspended Solids (mg/L)246455661115115676131478
Carlson Trophic State Index (Secchi)*46505750544955556365594652454950534754
Carlson Trophic State Index (Chl a)*41495751485755516471554757616059624760
Carlson Trophic State Index (TP)*465150495552545261625851555756615654-
*Index values generally range between 0 and 100, with increasing values indicating more eutrophic conditions.
       
 
 
 
Water Column Profiles
5/25/20167/12/20168/26/2016

Contact Limnology Laboratory, Iowa State University