Sepa chart Click to enter web site
The top of the red on the marker at the Bonhill bridge equates to just above 1.00 on the chart.
The blue line on the marker equates to just below 0.8 on the chart.
Weekend water equates to 0.6 on the chart.
The mid week water equates to 0.4 on the chart.

Thanks to Jack Ferguson, who is very informative on water levels, for the information