Szacunkowe poziomy efektywności są następujące:

Understanding Runoff Coefficients

Te runoff coefficient (C) is a dimensionless faktor presenting thee portion of rainfall that becomes surface runoff. It varies based on surface type, land use, and soil criteria. Values range from 0 (no runoff) to 1 (all rainfall becomes runoff).

Step 1: Classify the Surface

Identyfikacja tych type of surface involved in thee project. Common contriories included asfalt, concrete, graps, or bare soil. Each surface type has typical runoff coefficient ranges:

  • Asphalt: 0,75- 0,95
  • Konkret: 0,75- 0,95
  • Grass: 0,05- 0,30
  • Bare soil: 0,20- 0,50

Step 2: Determine Land Use andCover

Asses thee land use and cover type, as these influence runoff. Urban areas with impervious surfaces tend to have higher runoff coefficients, while vegetated areas havee lower values. Consider whether thee surface is natural, developed, or a mix.

Step 3: Consult Local Guidelines andData

Usie local or regional guidelines, which often provide e recommended runoff coefficient values for different surface type andd land uses. These resources help improwize consideracy based on regional climate and soil conditions.

Step 4: Calculate or Select thee Coefficient

Based one thee surface classification, land use, and local data, select an appropriate runoff coefficient. When in double, choose a value with then typical range and d document thee source of your estimate.