CBGS - Cat Point Creek, Water Quality Monitoring
Date of Testing: 28-Feb
Rainfall (mm)                  During Past Week >>> Past 7 days Day of testing 1 day prior 2 days prior 3 days prior 4 days prior 5 days prior 6 days prior 7 days prior
1 0 0 0 0 0 0 1 0
Hydrolab Calibration (Metadata)
  Date Time Room Temp (ºC)  BP  (mm Hg) Theor Sat D.O. D.O. pH "zero" (7.0) ph "slope" (4 or 10) SpC (ms) Depth Batt Volt
Pre-Cal 2/28 1130 22.5 762 8.65 na 7.08 3.99 12.98 0.1 3.7
Calibrated 8.67 7.00 4.00 12.89 0.0
Post-Cal 2/28 1615 16.6[1] 760 9.72 10.09[2] 7.07 4.05 12.86 0.0 3.7
Station CP 1                    
Time of Testing: 1430 Hours Spent Monitoring: 0.75  
Surface State Flow Rate (kt) Weather Water Color Tidal Elevation Tidal Current
Calm < 1 kt Sunny Normal Non-Tidal Non-Tidal
   
Air Temp (ºC) 9.5 Hydrolab Data (Quanta Model)
Water Temp (ºC) 6.5   Surface Benthic
Depth of Water Column (m) 1.5 Temperature 6.5 6.6
Secchi Depth (m) 0.8 D.O. (ppm) 10.90 11.10
Transparency Tube Depth (cm) na pH 6.28 6.08
D.O. (ppm), LaMotte, Trial #1 na Depth 0.1 1.5
D.O. (ppm), LaMotte, Trial #2 na Salinity 0.0 0.0
pH, LaMotte 6.0 Turbidity (NTU) 21 41
pH kit used Chloroph. Red  
Salinity (ppt), Refractometer (Sper Scientific #300011) 0 Nitrates (ppm) (Chemetrics   Vacu-vial, w/ Spec 20D+) 0.00
Fecal Coliform per 100 mL (E.Coli, via Coliscan Easygel) 0 Phosphates (ppm) (Chemetrics Vacu-vial, w/ Spec 20D+) 0.43
 
Station CP 2                    
Time of Testing: 1400 Hours Spent Monitoring: 0.5  
Surface State Flow Rate (kt) Weather Water Color Tidal Elevation Tidal Current
Calm 1 Sunny Normal Non-Tidal Non-Tidal
   
Air Temp (ºC) 8.5 Hydrolab Data (Quanta Model)
Water Temp (ºC) 4.5   Surface Benthic
Depth of Water Column (m) 0.3 Temperature 4.6 na
Secchi Depth (m) na D.O. (ppm) 11.30 na
Transparency Tube Depth (cm) 84 pH 6.98 na
D.O. (ppm), LaMotte, Trial #1 na Depth 0.1 na
D.O. (ppm), LaMotte, Trial #2 na Salinity 0.0 na
pH, LaMotte 6.0 Turbidity (NTU) 30 na
pH kit used Chloroph. Red  
Salinity (ppt), Refractometer (Sper Scientific #300011) 0 Nitrates (ppm) (Chemetrics   Vacu-vial, w/ Spec 20D+) 0.00
Fecal Coliform per 100 mL (E.Coli, via Coliscan Easygel) 0 Phosphates (ppm) (Chemetrics Vacu-vial, w/ Spec 20D+) 0.65
 
Station CP 4                    
Time of Testing: 1330 Hours Spent Monitoring: 0.5  
Surface State Flow Rate (kt) Weather Water Color Tidal Elevation Tidal Current
Ripple < 1 Overcast Normal High Water Flood
   
Air Temp (ºC) 7.0 Hydrolab Data (Quanta Model)
Water Temp (ºC) 5.5   Surface Benthic
Depth of Water Column (m) 1.4 Temperature 5.9 5.9
Secchi Depth (m) 0.3 D.O. (ppm) 9.47 9.73
Transparency Tube Depth (cm) na pH 6.70 6.90
D.O. (ppm), LaMotte, Trial #1 na Depth 0.1 1.4
D.O. (ppm), LaMotte, Trial #2 na Salinity 0.0 0.0
pH, LaMotte 6.4 Turbidity (NTU) 72 93
pH kit used Chloroph. Red  
Salinity (ppt), Refractometer (Sper Scientific #300011) 0 Nitrates (ppm) (Chemetrics   Vacu-vial, w/ Spec 20D+) 0.40
Fecal Coliform per 100 mL (E.Coli, via Coliscan Easygel) 0 Phosphates (ppm) (Chemetrics Vacu-vial, w/ Spec 20D+) 0.25
 
Station CP 8                    
Time of Testing: 1215 Hours Spent Monitoring: 1.5  
Surface State Flow Rate (kt) Weather Water Color Tidal Elevation Tidal Current
Calm 2 Overcast Normal Rising Flood
   
Air Temp (ºC) 9.5 Hydrolab Data (Quanta Model)
Water Temp (ºC) 5.0   Surface Benthic
Depth of Water Column (m) 8.6 Temperature 4.3 4.3
Secchi Depth (m) na D.O. (ppm) 12.40 12.20
Transparency Tube Depth (cm) 12 pH 6.99 6.93
D.O. (ppm), LaMotte, Trial #1 11.2 Depth 0.1 8.6
D.O. (ppm), LaMotte, Trial #2 na Salinity 1.8 1.9
pH, LaMotte 7.2 Turbidity (NTU) 116 132
pH kit used Phenol Red  
Salinity (ppt), Refractometer (Sper Scientific #300011) 2 Nitrates (ppm) (Chemetrics   Vacu-vial, w/ Spec 20D+) 0.45
Fecal Coliform per 100 mL (E.Coli, via Coliscan Easygel) 0 Phosphates (ppm) (Chemetrics Vacu-vial, w/ Spec 20D+) 0.39
 
[1]
Goff: It appears that I accidentally used cool tap water for the D.O. test rather than room temperature distilled water.  This may explain the anomolous post-cal D.O. reading (doesn't agree with theoretical) (humid air up near the membrane was warmer than the cool water down at the temperature gauge).
[2]
Goff: I accidentally used cool tap water rather than room temp distilled water for the D.O. calibration, here.  That may explain the anomolous reading here (???)