Buildings · drainage · SUEWS parameter database

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Buildings · drainagebldgs evidence record

storage_drain_params.drain_eq3

storage_drain_params.drain_coef_110

storage_drain_params.drain_coef_23

wet_threshold0.25

drainage bldgs generic generic Land-cover class Järvi 2011

Parameters

Names follow the SUEWS YAML specification; click one for its definition in the configuration reference.

`storage_drain_params.drain_eq`	3
`storage_drain_params.drain_coef_1`	10
`storage_drain_params.drain_coef_2`	3
`wet_threshold`	0.25

Provenance evidence

Awaiting sign-off

Published value · assessed by provenance-audit · 2026-08-24. Agent assessment is evidence preparation, not human verification.

The Surface Urban Energy and Water Balance Scheme (SUEWS): Evaluation in Los Angeles and Vancouver.Parameter source

Where: Table 2(a), Building column, p. 223

Gives Si = 0.25 mm, D0,i = 10 mm and b = 3 for Building. The footnotes identify these as literature values rather than a fit to an evaluation city.

Where: Section 2.5, interception, infiltration and runoff, p. 224

Equations 18 and 19 distinguish the drainage functions by surface type, assign roofs the power-law form, and state that the maximum rates and coefficients come from literature.

Assessment findings

Name	supported Building identifies the building-surface column in Table 2(a).
Target	supported Table 2(a) publishes the values by SUEWS surface type, including Building.
Values	supported The Building column gives storage capacity 0.25 mm, maximum drainage rate 10 mm, and drainage coefficient 3. Section 2.5 assigns roofs the power-law drainage equation, matching the stored equation choice and coefficients.
Source	supported Järvi et al. publish the complete stored building drainage tuple in Table 2(a).
Place	supported The values are presented by generic surface type, not as Helsinki observations. Section 3.1 identifies Vancouver and Los Angeles as the evaluation locations.
Representativeness	supported Generic scope reflects a literature parameter set offered for the SUEWS building class, without a city- or site-specific determination.
Applicable Scale	supported Table 2(a) defines the tuple for the Building land-cover class rather than for a whole neighbourhood, an individual roof facet, or a material specimen.
Method	supported Section 2.5 says the drainage rates and coefficients are taken from the literature, and Table 2(a) footnotes the individual values to earlier publications.
Identity	supported The record contains the one building drainage tuple published in Table 2(a); its stable path, origin, legacy ID, target, source, and values preserve the migrated row identity.

Scientific note

Järvi et al. publish this tuple as a generic SUEWS building land-cover parameter set. Helsinki is later application and migration context retained in the stable path and origin; it is not the place where the paper determined the values. No parameter, target, source, legacy identity, or origin has changed.

Model-ready fragment

Paste under land_cover.bldgs in a SUEWS YAML configuration; every value carries its citation.

storage_drain_params:
  drain_eq:
    value: 3
    ref:
      ID: jarvi2011
      DOI: 10.1016/j.jhydrol.2011.10.001
      desc: generic, generic, land_cover
  drain_coef_1:
    value: 10
    ref:
      ID: jarvi2011
      DOI: 10.1016/j.jhydrol.2011.10.001
      desc: generic, generic, land_cover
  drain_coef_2:
    value: 3
    ref:
      ID: jarvi2011
      DOI: 10.1016/j.jhydrol.2011.10.001
      desc: generic, generic, land_cover
wet_threshold:
  value: 0.25
  ref:
    ID: jarvi2011
    DOI: 10.1016/j.jhydrol.2011.10.001
    desc: generic, generic, land_cover