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Report Year: 2016
Slip Bluff Lake, Decatur County
Summary Data Table
Parameter5/24/20167/11/20168/22/20162016201520142013201220112010200920072006200520042003200220012000
Lake Depth (m)6.55.85.86.05.85.85.95.65.86.05.96.05.66.26.95.96.36.85.4
Thermocline Depth (m)2.32.74.2N/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A
Secchi Disk Depth (m)1.73.22.72.52.31.61.62.01.51.01.41.82.91.81.71.41.61.01.2
Temperature(oC)19.729.326.825.323.226.224.725.426.226.223.826.426.226.324.125.427.723.725.3
Dissolved Oxygen (mg/L)9.69.59.59.510.39.68.98.79.08.47.77.68.18.57.88.19.07.07.7
Dissolved Oxygen Saturation (%)105123119116.0120.5119.1107.3105.7111.4104.291.094.6100.2105.392.298.2114.183.293.2
Specific Conductivity (μS/cm)190.0190.0130.0170.0166.7163.3163.3173.3176.7210.0176.7182.6189.8238.2230.2237.9370.6173.8208.0
Turbidity (NTU)3.71.12.32.33.26.35.53.15.111.55.07.03.45.110.710.15.328.222.8
Chlorophyll a (μg/L)8.52.14.04.8<6.0619.85.43.9<556.8<517.82.94.88.87.62.54.02.2
Total Phosphorus as P (μg/L)24.216.022.020.72323<28.420.623.851.926.932172025272097-
SRP as P (μg/L)<2.8<2.8<2.8<2.8<4.3<5.6<14<10<11<8<9<1<11.21.01.82.1--
TKN (mg/L)<0.5<0.5<0.5<0.50.590.580.610.650.700.76---------
Total Dissolved Solids (g/L)0.10.10.10.10.10.10.10.10.1----------
Total Nitrogen as N (mg/L)----------<0.750.680.520.590.630.630.550.850.69
(Phenate)Ammonia Nitrogen (NH3 + NH4+) as N (μg/L)<0.6<0.6<0.6<0.640<2623<14<145<136<130--------
(Phenate)Ammonia Nitrogen (NH3) as N (un-ionized)(μg/L)0-1-13-510<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<0.5-0.120.120.120.120.120.120.220.12
TN:TP ratio----------2630322926242810-
pH7.98.58.98.48.48.68.48.38.28.07.68.08.48.18.38.28.17.57.5
Alkalinity as CaCO3 (mg/L)86836979827774818065819087113106769983126
Silica as Si (mg/L)-------------2.282.712.612.57--
Dissolved Organic Carbon (mg/L)21.0122.6019.5021.0412.5077.027<7.6768.386.267.766.019.169.98--
Inorganic Suspended Solids (mg/L)4222<1.4<2.1<3.22<574533572198
Volatile Suspended Solids (mg/L)3222343<3.2<8<9<822235232
Total Suspended Solids (mg/L)73454554<611675581241510
Carlson Trophic State Index (Secchi)*53434647485454505560555244525356536058
Carlson Trophic State Index (Chl a)*52384446466047444670445941465251394438
Carlson Trophic State Index (TP)*504449484949504850615254454751514870-
*Index values generally range between 0 and 100, with increasing values indicating more eutrophic conditions.
       
 
 
 
Water Column Profiles
5/24/20167/11/20168/22/2016

Contact Limnology Laboratory, Iowa State University