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        Ministry of Urban Development, Government of  India

 

 

 

 

 

1.0 Coverage Of Storm Water Drainage Network

Performance Indicator

 

Indicator

Unit

Definition

Coverage of storm water drainage network

%

Coverage is defined in terms of - % of road length covered by storm water drainage network

Data Requirements

Data required for calculating the indicator

Unit

Remarks

a) Total length of road network in the ULB

kms

Only consider roads that are more than 3.5 m wide carriageway

 

b) Total length of primary, secondary and tertiary drains

kms

Only consider drains that are trained, made of pucca construction and are covered.

 

Coverage of storm water drainage networks

%

Coverage = [(b / a)*100]

 

Rationale for the indicator 

This indicator provides an estimation of the extent of coverage of the storm water drainage network in the city. This value should be atleast 100 %, or closer to the benchmark range of 130 % to 150% (on the basis that about 30-50% of the road length should have drains on both sides)

Reliability of measurement

 

Reliability Scale

Description of method

Lowest level of reliability (D)

 Not applicable

 

Intermediate level ( C )

Estimated from city road maps, not updated in past 5 years

 

Intermediate level (B)

Estimated from city road maps (that are detailed and to scale), which have been updated in past 5 years

Highest/preferred level of reliability (A)

Actual ground levels surveys carried out to measure drain and road length. Surveys to verify that drains are of pucca construction and covered.

Minimum frequency of measurement of performance indicator

Smallest geographical jurisdiction for measurement of performance

Measurement

 Annually

Measurement

Ward level

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