{"id":"stormwater-pond","version":"0.3.0","classification":{"uniformat":"G3030"},"names":["Stormwater management pond"],"aliases":["SWM pond","stormwater facility","detention pond"],"service_life":{"median_years":50,"range_years":[25,75],"range_basis":"source_spread"},"pm_tasks":[],"basis":[{"type":"public_document","life_type":"planning","title":"CNA e-Tool Estimated Useful Life Table","by":"U.S. Department of Housing and Urban Development","url":"https://www.hud.gov/sites/documents/eul_for_cna_e_tool.pdf","page":1,"code":"HUD CNA 3.2.2.5","label":"Stormwater mgmt ponds","years":50,"note":"Same life for family and elderly properties. US multifamily housing. HUD's row is for site work at US multifamily properties, not municipal networks."},{"type":"public_document","life_type":"planning","title":"Greater Sudbury: Enterprise Asset Management Plan (2023)","url":"https://www.greatersudbury.ca/city-hall/budget-and-finance/financial-reports-and-plans/pdf-documents/enterprise-asset-management-plan/","page":30,"label":"Ponds","years":25,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"accounting","title":"Kingston: Tangible Capital Assets Policy","url":"https://cityofkingston.ca/media/pljd1bhs/finance_policy_tangible-capital-asset-policy.pdf","page":14,"label":"Land Improvements - Storm water ponds","years":75,"note":"Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"accounting","title":"Meaford: By-law 2020-83, Tangible Capital Asset Policy, Appendix A Estimated Useful Lives","url":"https://meaford.civicweb.net/document/103944/","page":19,"label":"Linear - Stormwater Facility","years":40,"note":"Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"accounting","title":"Quinte West: A09-POLICY-0034 Tangible Capital Asset Policy","url":"https://quintewest.ca/wp-content/uploads/2024/05/A09-POLICY-0034_-_Tangible_Capital_Asset_Policy.pdf","page":38,"label":"Storm Water Ponds","years":60,"note":"Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"planning","title":"Simcoe: County of Simcoe 2025 Asset Management Plan","url":"https://simcoe.ca/wp-content/uploads/2025/06/2025-Asset-Management-Plan.pdf","page":92,"label":"Stormwater Ponds","years":50,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"accounting","title":"Simcoe: POL-FIN-004 Tangible Capital Assets Policy (Schedule 3 to AUC 2026-046)","url":"https://simcoe.civicweb.net/document/155626/","page":21,"label":"Storm Ponds","years":50,"note":"Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"accounting","title":"The Blue Mountains: POL.COR.19.04 Tangible Capital Assets Policy","url":"https://www.thebluemountains.ca/sites/default/files/2022-01/POL-COR-19-04-Tangible-Capital-Assets-Policy.pdf","page":12,"label":"Linear - Stormwater Facility","years":40,"note":"Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page."}],"confidence":{"grade":"C","sample_size":null},"open_questions":["HUD gives planning lives for US multifamily housing; the municipal rows are Ontario accounting lives. Neither is observed replacement data.","No preventive maintenance tasks are sourced yet."],"contributors":["unfinished.one editors"],"last_reviewed":"2026-10-21","canonical_url":"https://unfinished.one/c/stormwater-pond","versioned_url":"https://unfinished.one/c/stormwater-pond/v/0.3.0","licence":"CC-BY-4.0","citation":"unfinished.one (2026). Stormwater management pond, v0.3.0. https://unfinished.one/c/stormwater-pond/v/0.3.0"}