EstuaryWatch Data Portal

Nitrate = 0

Nitrite = 0

Phosphate = 0.03

Phosphates = 0.15

Nitrates = 10

Nitrites = 0

The Curdies multifunction meter (Hach HQd40) could not be calibrated because it required NaCl calibration fluid, and we were unable to change it to KCl, our normal calibration fluid.We borrowed another meter from Colac CCMA, but this meter had a faulty Electrical Conductivity probe, and gave no EC readings.

We tested with both meters, but recorded the Curdies meter results in our report.

The results from both meters are shown in the Data Sheet

Hach meter readings too a long time to stabilise.

Nitrite = 0

Nitrate = 0

Phosphate (after dilution 1:5) =  0.07 x 5 = 0.35

Nitrates.  0.   Unfiltered sample

Nitrates  0.    Unfiltered sample

Phosphates  0.20   (Dilution X 5 used to test)

Some signs of blue-green algae forming.

Nitrites= 0

Nitrates = 0

Phosphates = 0.75      It was necessary to carry out a dilution to get a Phosphates reading.

Phosphate = 0.75

Nitrates = 0.0

Nitrates = 0.0

Nitrites = 0.0

Phosphate = 0.15

Nitrate = 10

Nitrite -= 1

There were few signs of Blue-Green Algae in the upper stretches of the river

Phosphate = 0.10

Nitrate = 2

Nitrate = 1

Using HACH HQ 2200 meter, but DO probe misbehaving.

TOP.    NO2 reading = 0.0.  NO3 Reading 0.0.  Phosphate reading = 0.07

BOTTOM.   NO@ reading = 0.0  NO3 reading = 0.0.  Phosphate reading = 0.02

Nitrite = 0.0

Nitrate = 0.0

Phosphate could not be tested because one of the test tubes broke.

No readings of temperature, Salinity, Diss0lved Oxygen or Electrical conductivity were possible because our multi-parameter meter has not been returned after repair.

Readings were made of: - 

Nitrates = 0.0

Nitrites  = 0.0

Phosphates = 0.02

We were unable to measure Temperature, Dissolved Oxygen and Electrical Conductivity because our multi-purpose meter was under repair.

Phosphate reading -  Top = 0.07   Bottom = 0.07

Nitrate reading           Top  = 10     Bottom = 1

Nitrite reading             Top =  0.07

Phosphate = 0.15

Nitrite = 1

Nitrate = 10 

Nitrate = 10

Nitrite = 0

Phosphate = .05

Phosphate Test = 0.25

Nitrate Test = 10

Nitrite Test = o

The surface of the monitoring site was very slippery, and great care was necessary to avoid slipping.

Nitrate < 10.  Nitrate < 1.  Phosphorus > 0.25

No sampling was possible because our sampling position was flooded.

We were able to undertake Phosphate, Nitrate and Nitrite tests,

taking samples from a bridge near our sampling position.

Results were: - Phosphate 0.015 mg/l

                          Nitrate.      0 - 10

                         Nitrite        0 - 1

Each time I tried to load photos or scans, the program wouj=ld shut down,

so I havd sent the photos and scans to Deirdre Murphy in an email.

All photos were uploaded to the Mouth Condition Data Sheet

We ran out of Data Sheets, so we filled out the Data for Boggie Creek at the bottom of the Dorey Street sheet.

I have copied out the data for Boggie Creek onto a separate sheet for clarity, (I hope)

We need new green sheets before the next monitoring day.

Adam Nash monitored with me at Boggie Creek (Marg O'Toole had other duties to perform.) I could not include Adam on the Internet data.

Datasheet not attached.

The pH meter could not be calibrated correctly, thud samples from top and bottom were not tested for pH.

: -The pH meter failed the calibration test.  We took readings with it, results were:-

TOP   7.2

BOTTOM   7.3

Adam Nash was a sampler, but we could not include him as his name is not in the program.

Condition of water at Boggy Creek is much better than at Dorey St, and much better that the condition last month.

Little smell, water clear, no scum on surface 

Several shoals of small mullet near the monitoring site were being chased by larger fish.

Two men fishing near the site said that they had caught "good" bream, and released them

The water seemed relatively clear, and there was no algae smell.

The low oxygen readings are a concern.  The video showing many dead fish was taken in "The Narrows", the area between Boggy Creek and the top of the lake.

We used the new HACH meter, and it showed two temperature readings, which differed by 0.2 degrees

The form had no way to report using the HACH meter.

No signs of Blue Green Algae at this site- approx 10km from the estuary

I wrote down the Salinity and Dissolved Oxygen readings I read off the meter, and transcribed them to the website. They have been highlighted on the website as errors, I may have put the decimal point in the wrong place, but I don't think so.

The EC readings on the meter were without any decimal point, ie 1704uS/cm, I put the decimal point to appease the website

Reply DM: that is the correct way to treat the EC readings - the water is quite fresh at the moment. I think the ppt and DO% were in the wrong columns on the datasheet. All readjusted now.

Sally Loveridge assisted Steve Beaton at Boggy Creek, and she wishes to do a course when one is available.

pH meter could not be calibrated

pH meter faulty