Normal View    Print View

    

Report Year: 2016
Dog Creek Lake, O'Brien County
Summary Data Table
Parameter5/31/20167/18/20168/28/20162016201520142013201220112010200920072006200520042003200220012000
Lake Depth (m)5.96.15.55.86.05.96.06.06.16.16.2-6.36.56.46.36.26.56.1
Thermocline Depth (m)2.21.53.7N/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A
Secchi Disk Depth (m)4.60.91.22.21.42.20.50.82.21.21.0-1.21.51.00.80.72.60.6
Temperature(oC)21.924.221.822.721.423.122.323.524.623.722.8-16.322.921.421.620.621.824.8
Dissolved Oxygen (mg/L)11.513.88.211.210.08.99.88.810.38.311.1-11.410.611.011.28.35.38.8
Dissolved Oxygen Saturation (%)13116594129.8113.7104.6113.9103.4125.198.3126.1-115.8123.0128.0128.291.756.3106.9
Specific Conductivity (μS/cm)520.0490.0420.0476.7440.0406.7390.0483.3473.3483.3433.3-580.5520.9444.7482.5485.2544.9658.5
Turbidity (NTU)<0.34.3<0.31.513.63.185.016.28.23.86.3-14.330.820.914.720.824.715.8
Chlorophyll a (μg/L)1.657.634.131.169.311.318.325.011.98.818.0-12.267.527.930.744.717.321.1
Total Phosphorus as P (μg/L)15.142.551.636.49830274.055.737.044.955.8-246197129123152-
SRP as P (μg/L)<2.8<2.8<2.8<2.8<4.3<5.668.2<10<11<8<9-<1<112.92.413.7--
TKN (mg/L)0.751.251.161.051.610.881.471.231.760.60---------
Total Dissolved Solids (g/L)0.30.30.30.30.30.30.30.30.3----------
Total Nitrogen as N (mg/L)----------1.0-7.453.642.721.931.405.191.38
(Phenate)Ammonia Nitrogen (NH3 + NH4+) as N (μg/L)46.40<0.619.2020<26629991<145<136<130--------
(Phenate)Ammonia Nitrogen (NH3) as N (un-ionized)(μg/L)3-23114<PRL<PQL<PQL<PQL<130--------
Nitrate + Nitrite (NO3 + NO2) as N (mg/L)8.343.160.2840.300.693231--7.123.991.520.630.164.070.16
TN:TP ratio----------19-3128431141140-
pH8.19.28.68.68.68.38.18.28.38.28.5-8.28.58.58.58.58.18.2
Alkalinity as CaCO3 (mg/L)177152164164171166142182188200180-226200154161186154205
Silica as Si (mg/L)-------------5.544.344.193.05--
Dissolved Organic Carbon (mg/L)35.3635.0039.1936.5218.4264.455<7.6<6.4<6.2-4.535.806.789.8512.97--
Inorganic Suspended Solids (mg/L)23<0.822<2.17210<5<4<4-2358359
Volatile Suspended Solids (mg/L)<1865124217<8<9<8-5679864
Total Suspended Solids (mg/L)3116714494166<510-710111691213
Carlson Trophic State Index (Secchi)*3862584956497263495860-58546063664666
Carlson Trophic State Index (Chl a)*3570656472545962555259-55726364685961
Carlson Trophic State Index (TP)*4358615670538562565962-506370747477-
*Index values generally range between 0 and 100, with increasing values indicating more eutrophic conditions.
       
 
 
 
Water Column Profiles
5/31/20167/18/20168/28/2016

Contact Limnology Laboratory, Iowa State University