The estate behind the first Hydro Electric Power Station in the Scottish Borders say that protecting wildlife is their number one priority.
Electricity is now being produced at Murray's Cauld near Selkirk.
Two giant turbines have been installed at the popular salmon-viewing spot on the River Tweed.
A spokesperson for Philiphaugh Estate said:
"To ensure the free passage of wildlife, we have worked closely with Scottish Natural Heritage and SEPA throughout the project.
"A new Larinier state of the art Salmon pass and a combined Eel, Lamprey and Smolt chute have been installed beside the turbines so that fish, eels, lampreys and smoults can ascend and descend the cauld. Screens prevent otters and larger fish from entering the turbines.
"In addition, we closely monitor the river level to ensure that the salmon pass and mill lade get a constant flow of water.
"Two electronic sensors have been placed in the river above and below the Cauld to measure water flow and height.
"These sensors can close off the turbines when water is low or if an obstruction to the flow occurs.
"Our first priority is to ensure that water can run down the fish passes, the second is to ensure that water descends the mill lade to protect this sensitive environment."
There are doubts over the future of Europe's oldest surviving iron-chain suspension bridge, the Union Chain Bridge.
The bridge, which spans almost 130 metres over the River Tweed is in need of repair, and both the Scottish Borders and Northumberland Councils are considering shutting the bridge for good, if funding cannot be found.
An estimated £4.7million is needed to repair the damage to the bridge, which was built in 1820, with the intention of strengthening ties between Scotland and England.
"Northumberland County Council is the lead authority for the Union Chain Bridge. However we have a joint responsibility, and are working together to develop options to allow the refurbishment of the bridge to take place.
"The bridge will require a new chain suspension hanger system to be developed and fitted; substantial deck replacement; upgrading of the existing parapets; and totally repainted. The estimated cost of the repairs is £4.7million.
"If the councils were unable to raise the required funding it is likely that a phased closure would be implemented."
Two Borders men are attempting to swim 35 miles from Kelso to Berwick to raise funds for Help for Heroes and the Lifeboat service.
John Edey and Alistair Smee set off at 10am on Saturday the 16th June and aim to arrive at Berwick Lifeboat station around tea time on Sunday.
They are braving strong tides, hypothermia and dreadful weather to raise hundreds for their chosen charities. Alistair said:
*John I are undertaking this adventure for ourselves but we are also hoping to raise a small amount of money for Help the Heroes. John served for 7 years with Territorial Army the Kings Own Scottish Borderers. We have both been involved with taking injured soldiers fishing on the Tweed, in particular John, who was so impressed by their wonderful spirit and lack of complaint despite injury. We felt that raising money for Help for Heroes not only would help them *