[2] The longest tributaries of the Novohradka are:[3] The river flows through the municipal territories of Proseč, Bor u Skutče, Jarošov, Nová Ves u Jarošova, Nové Hrady, Zderaz, Leština, Hluboká, Střemošice, Luže, Lozice, Jenišovice, Chroustovice, Hrochův Týnec, Dvakačovice, Vejvanovice, Úhřetická Lhota and Úhřetice.

It has an area of 1,080.5 ha (2,670 acres) and the main object of protection are pine forests and rock formations with a predominance of Cenomanian sandstones.

[4] The following course of the river forms a valley protected as the Údolí Krounky a Novohradky Nature Park.

The area is characterized by riparian vegetation along the river, scattered greenery, waterlogged meadows and adjacent woodlands.

Occurring here are protected species of animals and plants, e.g. fire salamander, northern crested newt and common kingfisher.