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Report Year: 2016
Lake of Three Fires, Taylor County
Summary Data Table
Parameter6/13/20168/2/20169/11/20162016201520142013201220112010200920072006200520042003200220012000
Lake Depth (m)6.46.45.96.26.26.56.16.16.56.46.6--6.67.83.63.93.84.0
Thermocline Depth (m)2.02.83.3N/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A
Secchi Disk Depth (m)0.90.40.80.70.60.70.70.40.70.50.7--1.90.40.60.60.60.8
Temperature(oC)27.625.423.225.423.022.022.824.424.724.324.2--24.822.824.327.424.226.1
Dissolved Oxygen (mg/L)19.47.93.510.24.85.86.16.86.64.99.5--9.42.28.314.08.38.7
Dissolved Oxygen Saturation (%)2459741127.656.367.169.981.580.758.5113.0--113.125.598.9176.1101.2107.2
Specific Conductivity (μS/cm)200.0150.0180.0176.7196.7200.0213.3200.0226.7186.7196.7--267.2230.4287.5236.7195.8214.9
Turbidity (NTU)28.430.47.922.212.510.713.827.121.919.121.7--7.7104.818.414.031.226.0
Chlorophyll a (μg/L)184.2119.725.3109.747.656.826.881.155.923.744.7--29.48.126.837.927.623.2
Total Phosphorus as P (μg/L)112.3148.1105.4121.916210395.3194.292.1175.1110.4--64118112152112-
SRP as P (μg/L)<2.8<2.8<2.8<2.848.113.028.522.5<1158.6<9--16.644.23.7<1--
TKN (mg/L)2.152.331.431.971.692.341.542.251.441.28---------
Total Dissolved Solids (g/L)0.10.10.10.10.10.10.10.10.1----------
Total Nitrogen as N (mg/L)----------2.2--2.463.390.980.961.891.62
(Phenate)Ammonia Nitrogen (NH3 + NH4+) as N (μg/L)<0.6<0.6228.407416523910661197306<130--------
(Phenate)Ammonia Nitrogen (NH3) as N (un-ionized)(μg/L)-3-182105<PRL<PQL<PQL<PQL<130--------
Nitrate + Nitrite (NO3 + NO2) as N (mg/L)0.41<0.07<0.0700.680.121<0.06<0.4<0.5---1.602.140.120.120.850.12
TN:TP ratio----------20--442991017-
pH9.59.57.99.08.18.08.18.88.47.98.9--8.17.68.28.67.77.4
Alkalinity as CaCO3 (mg/L)7671767478948782928388--104879411078124
Silica as Si (mg/L)-------------4.0211.982.002.16--
Dissolved Organic Carbon (mg/L)16.6919.9923.5520.0812.3987.078<7.678--5.446.5210.468.31--
Inorganic Suspended Solids (mg/L)54246<2.154<554--8371161313
Volatile Suspended Solids (mg/L)231651558820111010--5126848
Total Suspended Solids (mg/L)292071812101324131515--124917151822
Carlson Trophic State Index (Secchi)*6273636666656575666965--517567676764
Carlson Trophic State Index (Chl a)*8278627769706374706268--645163666361
Carlson Trophic State Index (TP)*7276717378717080697972--6473727772-
*Index values generally range between 0 and 100, with increasing values indicating more eutrophic conditions.
       
 
 
 
Water Column Profiles
6/13/20168/2/20169/11/2016

Contact Limnology Laboratory, Iowa State University