{"id":"stormwater-pond","version":"0.5.0","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":[{"task":"Inspect pond for minor items (debris, clogging, erosion)","frequency":"P1M","reference":"Stormwater Wet Pond and Wetland Management Guidebook (EPA 833-B-09-001)","url":"https://www.epa.gov/sites/default/files/2020-03/documents/pondmgmtguide.pdf","page":24,"checklist":"Section 2 Inspection Frequency"},{"task":"Inspect structural components (major inspection items)","frequency":"P1Y","reference":"Stormwater Wet Pond and Wetland Management Guidebook (EPA 833-B-09-001)","url":"https://www.epa.gov/sites/default/files/2020-03/documents/pondmgmtguide.pdf","page":24,"checklist":"Section 2 Inspection Frequency"},{"task":"Remove sediment from forebays (when 60% of volume is lost)","frequency":"P5Y","reference":"Stormwater Wet Pond and Wetland Management Guidebook (EPA 833-B-09-001)","url":"https://www.epa.gov/sites/default/files/2020-03/documents/pondmgmtguide.pdf","page":27,"checklist":"Table 2.3 Maintenance Activities and Schedules (Ponds)"},{"task":"Remove sediment from main pond cells (when 50% of volume is lost)","frequency":"P20Y","reference":"Stormwater Wet Pond and Wetland Management Guidebook (EPA 833-B-09-001)","url":"https://www.epa.gov/sites/default/files/2020-03/documents/pondmgmtguide.pdf","page":27,"checklist":"Table 2.3 Maintenance Activities and Schedules (Ponds)"},{"task":"Exercise and lubricate valves","frequency":"P1Y","reference":"Stormwater Wet Pond and Wetland Management Guidebook (EPA 833-B-09-001)","url":"https://www.epa.gov/sites/default/files/2020-03/documents/pondmgmtguide.pdf","page":51,"checklist":"M-7 Mechanical Components"},{"task":"Inspect mechanical components (valves, aerators, fountains, control panels)","frequency":"P1Y","reference":"Stormwater Wet Pond and Wetland Management Guidebook (EPA 833-B-09-001)","url":"https://www.epa.gov/sites/default/files/2020-03/documents/pondmgmtguide.pdf","page":20,"checklist":"Maintenance Problems: Mechanical components"},{"task":"Clean up shoreline: remove trash, debris and floatables","frequency":"P1Y","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":84,"checklist":"ARCS-SWM-09-01Y Stormwater Management - Ponds, Wet Ponds, Inspection"},{"task":"Full maintenance inspection of pond","frequency":"P1Y","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":84,"checklist":"ARCS-SWM-09-01Y Stormwater Management - Ponds, Wet Ponds, Inspection"},{"task":"Open the riser and test the valves","frequency":"P1Y","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":84,"checklist":"ARCS-SWM-09-01Y Stormwater Management - Ponds, Wet Ponds, Inspection"},{"task":"Remove debris and blockages from spillway","frequency":"P3M","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":85,"checklist":"ARCS-SWM-09-03M Stormwater Management - Ponds, Wet Ponds, Spillway and Erosion"},{"task":"Repair undercut, eroded and bare soil areas","frequency":"P3M","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":85,"checklist":"ARCS-SWM-09-03M Stormwater Management - Ponds, Wet Ponds, Spillway and Erosion"},{"task":"Mow the buffer and pond embankment where turf","frequency":"P6M","reference":"Public Buildings Service Preventive Maintenance Guide (Public Buildings Maintenance Standards)","url":"https://web.archive.org/web/20231003141600/https://origin-www.gsa.gov/system/files/GSA%20PBS%20Preventive%20Maintenance%20Guide%202022-01302023_0.pdf","page":86,"checklist":"ARCS-SWM-09-06M Stormwater Management - Ponds, Wet Ponds, Mow Buffer"}],"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":"planning","title":"Halton: Halton Region 2025 Asset Management Plan","url":"https://www.halton.ca/repository/halton-region-asset-management-plan","page":110,"label":"Storm Water Ponds","years":25,"note":"Asset management plan (planning life). Compared with an image of 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.","The guidebook says its maintenance suggestions are guidance, not federal requirements.","Written for GSA contracted O&M in US federal buildings; job plans are generic and defer to manufacturer instructions, and the fire extinguisher plans only point to NFPA 10."],"contributors":["unfinished.one editors"],"last_reviewed":"2026-10-22","canonical_url":"https://unfinished.one/c/stormwater-pond","versioned_url":"https://unfinished.one/c/stormwater-pond/v/0.5.0","licence":"CC-BY-4.0","citation":"unfinished.one (2026). Stormwater management pond, v0.5.0. https://unfinished.one/c/stormwater-pond/v/0.5.0"}