Fig. 1. Geographical location of Danjiangkou reservoir

Fig. 2. Workflow chart

Fig. 3. Correlation between measured water level and photon water level

Fig. 4. Comparison between measured water level and Photon water level

Fig. 5. Time curve of water area and photon water level in Danjiangkou area

Fig. 6. Fitting of water area and water level in Danjiangkou area

Fig. 7. Relationship between temperature and water level changes in Danjiangkou waters from 2018 to 2022

Fig. 8. Land use classification map of Danjiangkou Basin