The Nagold is 90.7 kilometres in length and has its source in Urnagold in the municipality of Seewald in the Northern Black Forest and flows in an easterly direction past Nagold, Calw[5] and Liebenzell and joins the Enz in Pforzheim,[6] near what is now the Parkhotel Pforzheim.

The source of the Nagold is a spring called the Nagoldursprung at Urnagold in the municipality of Seewald, on the territory of Besenfeld.

The Nagold now passes through the above mentioned meander hills as well as its most important settlements: Wildberg, Calw, Hirsau and Bad Liebenzell.

[8] The Nagold valley between Pforzheim and Altensteig forms the backbone of various main transport axes.

Many places, such as Weißenstein, earned their living from timber rafting and ponds were created in the river for this purpose, e.g. near the village of Erzgrube.

[9] In the Black Forest today, the timber industry is still important; around Nagold agriculture is more prominent.

Heavy industry and service industries play a key role, especially in Pforzheim (jewellery, precious metals, clocks, business, administration), as well as Ebhausen, Nagold, Kentheim (historic cotton mill), Calw (county town) and Liebenzell (spa).