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Report Year: 2016
Mormon Trail Lake, Adair County
Summary Data Table
Parameter6/13/20168/3/20169/12/20162016201520142013201220112010200920072006200520042003200220012000
Lake Depth (m)9.19.28.58.99.28.88.58.68.79.19.29.48.38.77.49.29.19.49.2
Thermocline Depth (m)3.43.73.5N/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A
Secchi Disk Depth (m)1.61.10.91.21.01.41.41.10.91.02.81.61.90.92.02.72.22.51.5
Temperature(oC)28.225.921.425.224.022.323.724.824.924.523.725.025.524.322.823.424.623.125.4
Dissolved Oxygen (mg/L)7.18.78.68.18.39.311.38.59.17.69.010.69.210.18.98.89.18.57.8
Dissolved Oxygen Saturation (%)911079798.599.1107.0134.2102.8111.491.1106.1128.1112.4119.0103.4103.0108.794.195.4
Specific Conductivity (μS/cm)230.0190.0190.0203.3213.3210.0216.7226.7230.0213.3236.7265.9227.5256.4259.7263.2287.9239.7261.9
Turbidity (NTU)11.38.98.29.48.89.16.66.09.17.01.88.94.912.96.95.43.23.65.6
Chlorophyll a (μg/L)13.834.335.227.829.315.722.717.836.520.1<524.712.445.818.09.24.04.57.0
Total Phosphorus as P (μg/L)30.847.741.740.0503932.730.042.636.823.933234030362340-
SRP as P (μg/L)<2.8<2.8<2.8<2.8<4.3<5.6<14<10<11<8<9<1<1<1<1<11.6--
TKN (mg/L)<0.51.100.960.831.081.070.930.721.041.60---------
Total Dissolved Solids (g/L)0.20.10.10.10.10.10.10.10.1----------
Total Nitrogen as N (mg/L)----------<0.750.650.890.990.840.720.641.091.14
(Phenate)Ammonia Nitrogen (NH3 + NH4+) as N (μg/L)<0.6<0.6<0.6<0.6<2645<10<14<145<136<130--------
(Phenate)Ammonia Nitrogen (NH3) as N (un-ionized)(μg/L)-1-2-1-111<PRL<PQL<PQL<PQL<130--------
Nitrate + Nitrite (NO3 + NO2) as N (mg/L)<0.07<0.07<0.07<0.070.120.12<0.14<0.06<0.4<0.5-0.120.120.130.120.120.120.300.31
TN:TP ratio----------2119392628212931-
pH8.59.08.68.78.78.28.98.58.48.28.48.58.88.58.58.48.48.17.6
Alkalinity as CaCO3 (mg/L)111859095100100991069910110612311111511882111119126
Silica as Si (mg/L)-------------3.381.881.151.10--
Dissolved Organic Carbon (mg/L)23.3623.1523.8923.4712.1966.105<7.6<6.4<6.27.095.136.746.548.806.85--
Inorganic Suspended Solids (mg/L)22<0.813<2.1<3.23<5<4<4451825334
Volatile Suspended Solids (mg/L)37768455<8<9<843833314
Total Suspended Solids (mg/L)59771166875<5871958648
Carlson Trophic State Index (Secchi)*53596258605555596260455351625046494754
Carlson Trophic State Index (Chl a)*56656663645861596660396255685952444550
Carlson Trophic State Index (TP)*546058576157545358565055505753564957-
*Index values generally range between 0 and 100, with increasing values indicating more eutrophic conditions.
       
 
 
 
Water Column Profiles
6/13/20168/3/20169/12/2016

Contact Limnology Laboratory, Iowa State University