BALDERHEAD, BLACKTON & HURY RESERVOIRS, County Durham, By Drone, July 2022.

Balderhead Reservoir is a reservoir in Baldersdale, County Durham, England. It is one of a chain of three reservoirs on the River Balder, a tributary of the River Tees, which it joins at Cotherstone, about 5 miles (8 km) to the east. Balderhead Reservoir was commissioned by the Tees Valley and Cleveland Water Board (TVCWB) to increase water supply to Teesdale and Teesside.

Blackton Reservoir is a reservoir in County Durham, England. It is situated in Baldersdale, about 4 miles (7 km) west of Cotherstone, where the River Balder joins the River Tees.

It is owned by Northumbrian Water and supplies water for Teesdale.

Blackton is one of a series of reservoirs on the same stretch of the Balder, located immediately downstream of the larger Balderhead Reservoir and being almost continuous with Hury Reservoir further downstream.

Hury Reservoir is a reservoir in County Durham, England situated in Baldersdale. The reservoir is located about four miles south of Middleton-in-Teesdale and about three miles west of Cotherstone. It supplies water for Teesdale and is owned by Northumbrian Water. It gets its name from the nearby village of Hury. It is almost adjoined to Blackton Reservoir to the immediate west. The dam 'bridges' the River Balder which flows in an easterly direction to meet the River Tees at Cotherstone. Hury Reservoir was under construction in 1891–92.