If you're thinking about buying a retractable awning, consider the value, longevity and cost. Purchasing a retractable deck awning is a big investment. While smaller, less-expensive awnings start at around $500, larger, higher-quality awnings can cost as much as $2,000 or more. Before you make the decision to buy a retractable awning, you should learn as much as possible about their benefits and drawbacks. Here are the top three pros and cons to consider.
Drainage basin (catchment area) is the area which supplies a river system, lake or reservoir with water. The whole area consists of smaller sub-catchments supplying tributaries of the main ri-ver and direct catchments, which drain straight into a lake or main river (Box 3.1).ts purpose is to co-nvey excess water from a drainage basin, which will include the products of weathering and addi-tional loads of solutes produced by man. This pro-perty makes a drainage basin an integrator and its operation is reflected in the quantity and quality of the river run-off.
Zabbix. vs. SecurActive Performance Vision. In the context of communication networks, a catchment area describes the geographical boundries of a network's components, including its connecting lines. For instance, the geographical area serviced by a wiring closet is the catchment area of that wiring closet.abbix. vs. SecurActive Performance Vision. In the context of communication networks, a catchment area describes the geographical boundries of a network's components, including its connecting lines. For instance, the geographical area serviced by a wiring closet is the catchment area of that wiring closet.