“…As regards hydraulic structures, the analysis of microfossils, such as pollen and ostracods, was combined to identify water reservoirs (Bayman et al, 2004; Palacios‐Fest et al, 2001). Although the diatom analysis is an increasingly used tool in archaeological investigations (Battarbee, 1988; Cameron, 2007; Grana, 2018), we have found few references regarding their employment for the identification and characterization of hydraulic structures. These studies come mainly from Europe and Mesoamerica, where diatoms proved useful in the characterization of water wells (Neely et al, 1995), Mesoamerican agricultural terraces (Trombold & Israde‐Alcantara, 2005), archaeological cofferdams (Cameron, 1996), and Roman‐British or Medieval drainage systems in Prague (Beneš et al, 2002; Cameron, 2007).…”