Uniformat G3030

Catch basin

Also called CB, storm inlet

• Confidence C
• Version 0.6.0 (permanent link)
• Reviewed 2026-10-22

Service life

Years in service. The band runs from the shortest to the longest life the sources state, so it shows how much they disagree, not how long 80% of units last. The line is the median of the stated lives.

Basis

• 50 years · CNA e-Tool Estimated Useful Life Table, p1 · HUD CNA 3.2.2.1 “Catch basins, inlets, culverts” — U.S. Department of Housing and Urban Development (planning life)
  Same life for family and elderly properties. US multifamily housing. HUD's row also covers inlets and culverts. HUD's row is for site work at US multifamily properties, not municipal networks.
• 75 years · Greater Napanee: By-law 2012-11, Tangible Capital Asset Policy, Appendix B Asset Useful Lives, p17 · “Storm Sewer System: Catch Basins” (accounting life)
  Capital asset policy (amortization period). Compared with an image of the cited page.
• 70 years · Greater Sudbury: Enterprise Asset Management Plan (2023), p30 · “Catch Basin” (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 50 years · Grey Highlands: By-law No. 2026-052, Tangible Capital Asset Policy A09-F-03, p10 · “Catch Basins” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 50 years · Kenora: AF-6-1 Tangible Capital Asset Policy (By-law 34-2026), p16 · “Storm Sewers - Catch Basins” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 50 years · Prince Edward: FIN-12 Tangible Capital Assets Policy, p34 · “Storm - Catch basins” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 50 years · Sarnia: Finance-04 Tangible Capital Asset Policy, Attachment No. 1: TCA Policy Appendix A, p2 · “Catch Basins” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 50 years · Severn: By-law 2019-04, Corporate Policy Manual: Tangible Capital Asset Policy, Useful Life Guide, p402 · “Infrastructure - Water & Sewer - Catch Basins” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 50 years · Severn: By-law 2019-04, Corporate Policy Manual: Tangible Capital Asset Policy, Useful Life Guide, p402 · “Infrastructure - Water & Sewer - Double Catch Basins” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 50 years · Amherstburg: Asset Management Plan Town of Amherstburg 2025, p62 · “Catch Basins” (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 75 years · Bruce: Asset Management Plan 2025, Bruce County, p67 · “Stormwater - Catch Basins (weighted avg EUL)” (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 75 years · Chatham-Kent: Detailed Asset Management Plan: Stormwater 2025, p11 · “Catch Basins” (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 50 years · Kirkland Lake: Asset Management Plan 2025 Town of Kirkland Lake, p95 · “Catch Basins” (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 90 years · Oxford: Oxford County Asset Management Plan 2025, p326 · “Catchbasins” (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 50 years · Peterborough: Asset Management Plan 2025 - Peterborough County, p71 · “Catch Basins” (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 80 years · Sault Ste. Marie: Stormwater Asset Management Plan, City of Sault Ste. Marie, p14 · “Conveyance System - Catch Basins” (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 75 years · Stormont: Asset Management Plan 2025, p27 · “Catch Basins” (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.

How sources are chosen and recorded: sourcing policy.

Preventive maintenance

3 tasks in 1 work order.

1. 1
2. 2
3. 3
4. 4
5. 5
6. 6
7. 7
8. 8
9. 9
10. 10
11. 11
12. 12Annual

Months from the schedule start. Download the tasks as CSV for a CMMS, or ask the MCP tool get_pm_schedule for dated visits.

Frequencies are ISO 8601 durations in the data (P3M = every 3 months).

Open questions

• HUD gives planning lives for US multifamily housing; the municipal rows are Ontario accounting lives. Neither is observed replacement data.

Know the answer? Send it with a source to [email protected].

Cite this

Citation

unfinished.one (2026). Catch basin, v0.6.0. https://unfinished.one/c/catch-basin/v/0.6.0

BibTeX

@misc{unfinished_catch_basin_0_6_0,
  title = {Catch basin},
  author = {{unfinished.one}},
  year = {2026},
  version = {0.6.0},
  url = {https://unfinished.one/c/catch-basin/v/0.6.0},
  note = {CC BY 4.0}
}

Licence CC BY 4.0 · How to cite · JSON · Versions: 0.6.0, 0.5.0, 0.4.0, 0.3.0, 0.2.0, 0.1.0