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Report Year: 2016
Storm Lake (incl Little Storm Lake), Buena Vista County
Summary Data Table
Parameter5/16/20166/27/20168/15/20162016201520142013201220112010200920072006200520042003200220012000
Lake Depth (m)2.82.72.82.82.82.42.42.12.92.92.82.72.62.82.72.72.82.52.4
Thermocline Depth (m)NilNilNilN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A
Secchi Disk Depth (m)0.40.50.50.50.40.70.50.30.40.70.50.50.40.40.40.30.50.30.3
Temperature(oC)12.525.525.021.020.220.521.321.818.921.521.823.623.926.721.720.523.722.923.5
Dissolved Oxygen (mg/L)23.39.312.215.08.310.210.69.68.912.18.27.99.58.68.39.49.49.29.0
Dissolved Oxygen Saturation (%)219114148160.290.7111.4119.5109.894.2137.793.793.3112.9107.493.1104.8110.7106.2104.2
Specific Conductivity (μS/cm)500.0500.0440.0480.0510.0483.3473.3510.0456.7436.7493.3492.6558.0525.5520.2487.4544.4603.7522.0
Turbidity (NTU)33.3-18.325.836.916.633.637.147.846.623.121.444.2209.9113.859.340.278.157.4
Chlorophyll a (μg/L)9.713.719.014.19.18.122.39.210.330.76.017.221.333.319.023.119.321.514.0
Total Phosphorus as P (μg/L)67.745.778.063.8945670.0106.394.395.159.97072749110589187-
SRP as P (μg/L)18.9<2.86.68.819.9<5.6<1482.433.825.711.17.619.210.325.119.411.5--
TKN (mg/L)<0.5<0.5<0.5<0.50.660.530.770.780.812.09---------
Total Dissolved Solids (g/L)0.30.30.30.30.30.30.30.30.3----------
Total Nitrogen as N (mg/L)----------<0.751.941.481.181.181.371.321.520.92
(Phenate)Ammonia Nitrogen (NH3 + NH4+) as N (μg/L)20.3016.85<0.66<26<2620<14<145<136<130--------
(Phenate)Ammonia Nitrogen (NH3) as N (un-ionized)(μg/L)13-3020<PRL<PQL<PQL<PQL<130--------
Nitrate + Nitrite (NO3 + NO2) as N (mg/L)3.322.09<0.0720.730.20101<0.5-1.200.740.500.460.470.410.780.26
TN:TP ratio----------930231813141613-
pH8.48.58.58.58.38.48.68.48.38.28.38.68.58.48.48.48.48.48.3
Alkalinity as CaCO3 (mg/L)171159139156164148148177167139170148173168155113161157187
Silica as Si (mg/L)-------------6.717.065.934.42--
Dissolved Organic Carbon (mg/L)36.9128.0229.1231.3525.1243.894<7.6<6.4<6.25.064.554.954.508.639.84--
Inorganic Suspended Solids (mg/L)17141415311127243926161430182650223539
Volatile Suspended Solids (mg/L)8445469108<9<8796718101010
Total Suspended Solids (mg/L)25181820351736344835212339243367324549
Carlson Trophic State Index (Secchi)*74717071756569757365697073747576707779
Carlson Trophic State Index (Chl a)*53566057525161525364485961655961606156
Carlson Trophic State Index (TP)*655967647062657170706365666669716980-
*Index values generally range between 0 and 100, with increasing values indicating more eutrophic conditions.
       
 
 
 
Water Column Profiles
5/16/20166/27/20168/15/2016

Contact Limnology Laboratory, Iowa State University