A statistical approach to urban stormwater detention planning

Thesis/Dissertation · Fri Jan 01 04:00:00 EST 1988

OSTI ID:5283505

Segarra, R I

A statistical model was developed to study the long-term behavior of a stormwater detention unit. This unit stores a portion of the incoming runoff, corresponding to the empty space available in the unit, from which runoff is pumped to a treatment plant. The objective is to avoid, as much as possible, the discharge of untreated runoff to receiving bodies of water. The model was developed by considering the arrival of independent runoff events at the urban catchment. The process variables of event depth, duration, and interevent time were treated as independent, identically distributed random variables. A storage equation was formulated from which the probability of detention unit overflow was obtained. With this distribution it was possible to define the trap efficiency of the unit in terms of the long-term fraction of the runoff volume trapped by the storage unit. A pollutant load model was also formulated, based on a first-order washoff model. This model was used to define pollutant control isoquants. Optimal values of the required storage capacity and treatment rate were obtained by treating the isoquants as production functions.

• Research Organization: Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (USA)
• OSTI ID: 5283505
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
DISASTERS
ENVIRONMENTAL TRANSPORT
HYDROGEN COMPOUNDS
LIQUID WASTES
MASS TRANSFER
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
RUNOFF
STORAGE
STORMS
SURFACE WATERS
URBAN AREAS
WASTE WATER
WASTES
WATER
WATER POLLUTION ABATEMENT
WATER TREATMENT