Naslov
Identification of Groundwater Level Decline since the Seventies of the Twentieth Century - Case study of the Zagreb and Samobor-Zaprešić Aquifers, Croatia

Autori
Posavec, Kristijan ; Vujević, Mate ; Kolačević, Renata

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, stručni

Izvornik
44th Annual Congress of the International Association of Hydrogeologists (IAH) "Groundwater Heritage and Sustainability" - book of abstracts / Posavec, Kristijan ; Marković, Tamara - Zagreb : International Association of Hydrogeologists, 2017, 12-12

ISBN
978-953-6907-61-8

Skup
44th Annual Congress of the International Association of Hydrogeologists (IAH) "Groundwater Heritage and Sustainability"

Mjesto i datum
Dubrovnik, Hrvatska, 25.09.2017. - 29.09.2017

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
groundwater level ; decline ; trend ; water supply

Sažetak
Historically, groundwater levels of the Zagreb – Velika Gorica and Samobor – Zaprešić aquifers are continuously declining. Figure 1 presents isopach map of ground water level decline, showing that groundwater levels declined up to 5 m on some parts of the aquifers during the last 40 years. Continuous decline of groundwater levels mainly occur due to continuous dominant erosional processes of the Sava riverbed, i.e. the river transports existing riverbed deposits downstream from Zagreb. Due to lack of sediment transport from the upper parts of the river, where it is regulated by hydropowerplants, the river cuts its course into existing gravel deposits. Decrease in the Sava riverbed causes decrease in water levels of the river, and consequently in groundwater levels of Zagreb – Velika Gorica and Samobor-Zaprešić aquifers, since groundwater level, i.e. water table is permanently connected to the Sava river.

Izvorni jezik
Engleski

Znanstvena područja
Rudarstvo, nafta i geološko inženjerstvo

POVEZANOST RADA