There are many small streams that feed Watersheddles Reservoir (yards over the border in Lancashire) from which the River Worth is fed.

It then flows east north-east through the suburbs of Keighley into the town centre where North Beck flows into it, it then continues down towards Stockbridge where it joins the River Aire.

The river currently has a population of small brown trout and grayling, but they are restricted to certain parts by a number of high weirs left behind from its industrial past.

Woollen and worsted manufacture was introduced here with the first cotton-mill in Yorkshire, Low Mill at Keighley, erected in 1780.

Bradford City Council have marked out a short/middle (circular) distance walk along the valley called The Worth Way.