I have experience in studying the impact of hydrogeology on catastrophic floods. An example would be the flooding in Europe in the summer of 2002. See my discussion "How is geodynamics and hydrogeology taken into account?". see my publication "Floods and droughts as a result of deformability of the geological environment" for details.
The water content of the rivers is formed by atmospheric precipitation and underground waters. Influence of underground waters on water content of the rivers cannot be measured. It is shown that the volume of underground water exchange is underestimated and can be commensurable with a volume of atmospheric precipitation. Change of level of underground waters is defined by changes of volume of the geological environment during geodeformations. It is offered to consider geodeformations as one of the reasons of floods and droughts. Studied the changes the gravitational field and geodeformations during droughts and floods in the Amazon in 2005-2006. Studied the hydrological regime of the River Nile. Shows the influence of geodeformation on the level of Danube and Dniester. Proposed detailed study the causes of floods in Europe in 2002. Influence of the Earth’s surface deformation on floods and droughts is very important and requires special detailed study. Changes in volume of rocks during Earth's surface deformation are accompanied by dilatancy which influence on the amount of drought and flooding has turned out to be significant. Study of the processes considered in the thesis gives grounds to expect that floods and droughts associated with deformations of the geological environment will be successfully predicted. Foto https://www.google.com/url?sa=i&url=https%3A%2F%2Fren.tv%2Fnews%2Fv-mire%2F1138805-v-chernomorskom-regione-turtsii-livni-vyzvali-navodneniia&psig=AOvVaw2SdhsJ2lm16vYlBvplRoZX&ust=1694020292799000&source=images&cd=vfe&opi=89978449&ved=2ahUKEwjyktC_-5OBAxWdEBAIHSPSCyEQr4kDegQIARBc
There was a drought in Turkey before the flood. Look at the photo from the article "Two reservoirs that supplied fresh water to Istanbul evaporated in Turkey
https://antikor.com.ua/ru/articles/396450-v_turtsii_isparilisj_dva_vodohranilishcha_kotorye_postavljali_presnuju_vodu_v_stambul".
No rain could cause a flood.
Weather over Turkey during the flood. This is cumulus intramass cloudiness. This is the convection of moist air over the ??wet?? land (the whole of August in Turkey was !!drought!!). Water in clouds of local origin (there is practically no air transfer from sea areas since there is no cyclone).
The source of the data is in the photo.
Before the earthquake in Algeria (map), during the stretching of the earth's crust, convective clouds formed in the desert (water evaporated from the surface of the earth???). https://www.sat24.com/history.aspx Where did the water come from there that day?
Yesterday it was the syzygy of the tide in the solid body of the Earth and the extreme of the angular velocity of the rotation of the earth. There is convective cloudiness above Turtsmey again. Where does water come from? These are hydrogeodynamic processes that accompany seismic manifestations.
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