This thesis describes the development an easy to use, low cost device which can continuously measure the water transparency throughout different layers in ditches. The development of this device...Show moreThis thesis describes the development an easy to use, low cost device which can continuously measure the water transparency throughout different layers in ditches. The development of this device has started in several forms using several detection methods with LEDs, a laser or a pre-made turbidity sensor. The intended use of the device is in the ditches of the Living Lab in Leiden and might be expanded to ditches across the country. Another part of this thesis describes the development of an automatic air-based monitoring system for the Living Lab using a drone. The first steps towards the automation of this system have been made.Show less
Chlorophyll-a concentrations are a widely used parameter for analysing and quantifying the quality of surface water. The procedure for determining it is a lengthy chemical process. This report...Show moreChlorophyll-a concentrations are a widely used parameter for analysing and quantifying the quality of surface water. The procedure for determining it is a lengthy chemical process. This report presents an alternative automated process for near-instant chl-a concentration determination through spectral analysis of water samples using quantification of characteristics in transmission signals.Show less
