The fountain is center image and jets of water should be rising from top of the structure - unfortunately not working.
Local signage states :-
"The Lake is a key feature of The Arboretum.
The designer Edward Milner intended it to be both an ornamental and practical feature as it was designed to collect water from the many springs on the site.
The Fountain was erected in 1911, 39 years after ,the opening of The Arboretum, to celebrate the inauguration of Lincoln's new water supply from Elksley Water Works.
The introduction of the new water supply was greeted with great celebration and the fountain is composed of cores taken from the bore hole at Elksley"
DB 1 August 2019