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Report Year: 2016
Meadow Lake, Adair County
Summary Data Table
Parameter6/13/20168/1/20169/13/20162016201520142013201220112010200920072006200520042003200220012000
Lake Depth (m)3.12.02.42.53.23.13.12.73.32.82.9--4.85.15.15.05.34.6
Thermocline Depth (m)2.0NilNilN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A
Secchi Disk Depth (m)0.70.30.50.50.70.50.50.70.70.50.6--0.50.50.91.51.01.0
Temperature(oC)26.825.022.224.724.121.422.923.924.325.123.6--24.322.023.024.223.925.3
Dissolved Oxygen (mg/L)10.64.85.87.15.811.88.77.77.78.49.1--10.16.910.28.610.87.8
Dissolved Oxygen Saturation (%)132586785.869.4132.399.791.391.7101.9107.6--118.279.3116.6100.5129.992.6
Specific Conductivity (μS/cm)260.0240.0240.0246.7243.3230.0276.7256.7283.3280.0356.7--283.0281.0240.9300.0249.6253.4
Turbidity (NTU)18.522.414.518.514.832.534.524.920.419.320.1--30.036.721.811.328.133.9
Chlorophyll a (μg/L)78.959.880.072.946.778.878.961.955.747.222.7--119.053.629.825.246.940.6
Total Phosphorus as P (μg/L)76.5161.9175.7138.07912791.883.282.6108.571.1--112116127161126-
SRP as P (μg/L)<2.8<2.8<2.8<2.8<4.3<5.6<14<10<11<8<9--5.222.13.54.3--
TKN (mg/L)0.831.532.011.451.702.291.961.941.862.26---------
Total Dissolved Solids (g/L)0.20.20.20.20.20.20.20.20.2----------
Total Nitrogen as N (mg/L)----------0.7--1.441.691.661.111.682.14
(Phenate)Ammonia Nitrogen (NH3 + NH4+) as N (μg/L)<0.6124.1081.65654338<1044<145<136<130--------
(Phenate)Ammonia Nitrogen (NH3) as N (un-ionized)(μg/L)-263222<PRL<PQL<PQL<PQL<130--------
Nitrate + Nitrite (NO3 + NO2) as N (mg/L)<0.07<0.07<0.07<0.070.140.120<0.06<0.4<0.5---0.150.350.120.140.390.14
TN:TP ratio----------10--131514916-
pH8.47.98.08.18.38.38.48.48.28.08.1--8.28.18.68.37.98.2
Alkalinity as CaCO3 (mg/L)121110108113118106127119126126171--1271177212095109
Silica as Si (mg/L)-------------6.216.605.032.78--
Dissolved Organic Carbon (mg/L)24.5427.9127.8626.7715.1376.868<7.6<6.47--7.414.5912.419.55--
Inorganic Suspended Solids (mg/L)412883654<546--995376
Volatile Suspended Solids (mg/L)11131312101214161313<8--1310136912
Total Suspended Solids (mg/L)1524212013181820161713--22191791618
Carlson Trophic State Index (Secchi)*6676707065717066656968--707061546160
Carlson Trophic State Index (Chl a)*7371747368737371706861--777064626867
Carlson Trophic State Index (TP)*6778797567746968687266--7273747774-
*Index values generally range between 0 and 100, with increasing values indicating more eutrophic conditions.
       
 
 
 
Water Column Profiles
6/13/20168/1/20169/13/2016

Contact Limnology Laboratory, Iowa State University