Topchachi lake is spread over an area of 214 Ac and the Topchachi wildlife sanctuary spread 8.75 sq Kms. Topchanchi is located 37 Kms far from Dhanbad. Topchanchi Lake is used to supply water to Jharia. Topchanchi is also known as ‘Jhariya Water Board’. Topchanchi Lake is an artificial Lake.