Parish councillors were invited to see the progress on a pass to allow fish to swim past a weir.
The Environment Agency is building a fish pass at a gauging station on the River Welland near Tallington.
Members of Tallington Parish Council visited the site to get an update on the work.
The Environment Agency and contractor Galliford Try explained to councillors how the pass would work and is being built.
This was followed by a guided tour of the works.
Parish council chairman Coun Geoff Mayling said: “We enjoyed an informative session and are keen to ensure that our community have the opportunity to attend a similar meeting as the works reach completion.”
Tallington gauging station provides information for flood risk management but acts as a barrier to fish migration, including the endangered European eel. The fish pass is being funded by Defra .