Several types of soils are widespread in the municipality.

The leached soils survive on flat and slightly drained surfaces. They are with crumbled structure. They are distinguished with high mineral content, significant wetting ability and unfavourable physical and mechanical properties. Although they are rich of soil nutrients for improving the nourishing regime they need fertilizing with organic and mineral composts. They are the most spread soils in the municipality. They are suitable for cultivation of all types of agricultural cultures.

There are leached maroon soils in the region of the town of Karnobat. The structure of the upper layer is very dusty, but it is comparatively good. It becomes worse in the lower layers. Water permeability is law and the nutrients are limited, which necessitates a huge mixed nitric and phosphoric burning. These soils are suitable mainly for field crops.

There are alluvial soils along Mochuritsa river valley. They have favourable physical and mechanical properties, water and thermal conditions and upper layer waters. They are suitable for cultivation of almost all types of vegetable, alfalfa, beetroot and others.

The municipality is poor of mineral resources. Quarries for construction materials with local and regional importance are found:

Sands - the quarry is to the north of Tserovski artificial lake, almost immediately by the river-bank at about 2-3km. southeast of the village of Venets. The productive layer is formed by Pliocene materials. The terrain is occupied with fields.

Peat - it is in the bog territory at about 1 km. south-west of the village of Venets, with an area about 6 sq .m. till now the deposits are not explored yet.

Clays - there is a clay layer under the peat. Two other deposits are found near the town of Karnobat. The first quarry deposits are calculated to 4 million cubic meters and the annual extraction - 80 thousand cubic meters. The other quarry is with capacity of 432 thousand cubic meters and annual extraction - 40 thousand cubic meters.

Water resoureces

The territory is drained by Mochuritsa river, which flows into Tundzha river and its length is 85.9 km, and Rusokastrenska river, which flows into Mandrensko lake.

The surface flow is formed by rainfalls and to a small extent by snow thawing. Due to the frequent and long summer drains and the high vapours during this period the small streams get dry and the bigger rivers reduce extremely their quantities.

There are constructed artificial lakes and micro-lakes with average area 50-80 decares on many of the feeders. They are used for watering.

The underground waters which have more constant debit are important for the water supply of the municipality. The lithological structure and the conditions of the occurrence of the separate types of rocks have determined the formation of primed and leaked waters. All river ledges along the rivers in the municipality are classified as primed waters. The leaked waters are bound to separate cracks in the rock types. They are used for supply of drinking water.

Drilling surveys for the necessities of water supply have been made for almost all residential areas.

The biggest prognosticated quantities show the data for the water basin in the village of Asparuhovo and the village of Smolnik - 15 l/sec. The determined water quantities of underground waters on the territory of the municipality are sufficient for the fulfillment of its demands. The shortage is provided by water economy system "Kamchiya lake" - 200 l/sec

Regarding the flora the territory is classified to the Thracian forest vegetation region, which includes mountain hills and lower lands - to the south of the Balkan.

The forest tree vegetation is compounded of deciduous leaf falling forests - homogeneous and mixed forests of cerris-oak, oak-tree, hornbeam. Mixed cultivation of ash-tree, elm-tree, common hornbeam, cerris oak, maple and along with them willow, poplar and others are spread along the inlet areas and the riverside lands of the rivers and the streams. There are mixed forests along the hill earth formations and the strongly segmented hill slopes with maroon forest soils. Wide spread among the bushes are sumach, thorn, hawthorn, cornet-tree and others.

In the field region the natural forest vegetation is substituted by an agricultural one. Many herbs that have application in the pharmaceutics are spread in the mountain as well as in the field region along with various forest and culture vegetation. All over the region there are wild briar, hawthorn, nettle, dandelion, blackthorn, common balm, plantain, chamomile, white milfoil, peppermint, thyme, marjoram, primrose, St. John's wort, lime-tree, walnut-tree.

The edible boletus and the chanterelle are important for the mushroom-growing.

Although low, Karnobat mountain has a rich fauna variety. Here there are:

from the mammals - deer, wild boar, jackal, wild duck, badger, polecat, rabbit and others.

from the rodents - squirrel, hamster, dormouse and others .

from the birds - hawk, falcon, hawk, quail, woodcock, turtle-dove, pigeon, owlets (species under protection) and others.

from the reptiles - tortoise (species under protection), lizards, viper, motley grass-snake and others.

In the spring and winter period in the region there is a different kind of game -snipes, wild ducks, rarely geese.

The hunting fauna is represented by small game and has a local significance. The total hunting area is 57 700 ha. Its is managed by Association of Hunting and Fishing - Karnobat.

The fishing is concentrated mainly along Mochuritsa river. In it there is barbell, chub, gudgeon. The artificial water basins are planted with carps.