Topchanchi is a census town in Topchanchi CD Block in Dhanbad district in the Indian state of Jharkhand. At Topchanchi a stream has been dammed by Jharia water Board at Rajdhato to form a big reservoir from where water is supplied to Dhanbad and its suburbs. This reservoir is famous as Topchanchi lake attracting thousands of tourists around the year. The Topchanchi Water Reservoir spreads over an area of 214 Ac. The Topchanchi Wildlife Sanctuary covers a sprawling plot that measures approximately 8.75 square kilometers. Although the Topchanchi Wildlife Sanctuary is not that spacious yet it manages to preserve the innocuous essence of the wild beasts that reside in it. Grand truck road passes through the middle of topchanchi. You can catch a glimpse of the Parasnath hill from Topchanchi.