Testing linear regression to predict the influence of macro-scale parameters on micr-scale water quality parameters

Testing linear regression to predict the influence of macro-scale parameters on micr-scale water quality parameters

Dommerholt, Naomi (TU Delft Civil Engineering & Geosciences)

Ertsen, M.W. (mentor)
Houser, R.S. (graduation committee)
Pande, S. (graduation committee)

Delft University of Technology

Water Management

2023-10-05

This study investigates the connection between macro-scale parameters (MSP) and micro-scale water quality parameters (MSWQP) in the Brantas River, employing a multivariate linear regression (MLR) modelling approach. The analysis reveals several critical insights into the complex dynamics of water quality in this river system.

Key findings indicate that high-quality input data, both in terms of quantity and measurement frequency, play a key role in the effectiveness of predictive models. Seasonality is a useful predictor and is recommended to be supplemented with rainfall data to better capture its influence on runoff and water quality. The study introduces the concept of basin accumulation and the implementation of buffer areas, demonstrating that these enhancements lead to improved model performance.

In conclusion, it can be said that relying just on macro-scale parameters is insufficient to generate an effective linear regression model. However, with the right optimizations and useful input data, it can be an insightful and valuable tool for water quality prediction.

Multivariate Linear Regression
Dissolved Oxygen
Land Cover
Macro-scale parameter
Mirco-scale parameter
Water quality
Brantas river

http://resolver.tudelft.nl/uuid:de77856a-34d5-4b79-9851-444e310e78e9

Student theses

master thesis

© 2023 Naomi Dommerholt