You will be searching on the bridge so please be mindful of the passing traffic.
The river that runs under the Crockford Bridge is the River Bourne Addlestone branch. This branch should not be confused with the River Bourne Chertsey Branch.
The two branches meet up in Chertsey Mead and flow in to the Thames very near the confluence of the River Wey and the Thames.
The River Bourne Addlestone branch or The Bourne rises southwest of Bisley in Bisley Common where it joins the longer Trulley Brook which drains Colony Bog and the middle of the Pirbright Ranges. It flows between West End and Bisley skirts the south of Chobham makes a meander into Woking and joins the much longer Mill Bourne before flowing between Woodhan and here in Addlestone, then New Haw. Finally passing through some of the town, it enters St Georges College where the River Bourne joins with the Chertsey Branch. The River Bourne then by a manmade channel turns east instead of running the final 100m into the Upper Chertsey Reach; joining the Thames below the southern weir of Shepperton Lock and its many islands, which due to the barraging to control the flow of the Thames.