sent St. Petersburg by 25 feet (7.62 meters). Knowing about frequent floods from the locals, the Swedes laid the fortress <a href="//en.wikipedia.org/wiki/Nyenschantz" title="Nyenschantz">Nyenschantz</a> and the city of Nyen away from the delta upstream of the Neva River, at the confluence of the river <a href="//en.wikipedia.org/wiki/Okhta_River_(Neva_basin)" title="Okhta River (Neva basin)">Ohta</a> to Neva.<sup id="cite_ref-list_8-0" class="reference"><a href="#cite_note-list-8"><span>[</span>8<span>]</s