**Note that an updated version of the data (v2023.1) was uploaded on April 27, 2026, which supersedes earlier versions. This is an update of v2023 with revised files. The version number now reflects the last full year of output data. In this version, file names were changed from “…_MonthlyRun.csv” to “…_AnnualRun.csv” to match the planned frequency of the update. Output remains monthly.**
\nThese data sets are the results of leveraging bi-national data and the Large Lakes Statistical Water Balance Model (L2SWBM) specifically tailored for the Laurentian Great Lakes to produce value-added time series of water supply components, including expressions of uncertainty, that ultimately close the water balance across the interconnected Great Lakes system.
\nThe model serves as a new cornerstone for bi-national coordination of hydrologic data throughout this international transboundary basin, providing an improved means of capturing data patterns, revealing seasonal variabilities, as well as short-term and long-term trends.
\nThis repository includes monthly output from the L2SWBM. Output datasets include over-lake precipitation, over-lake evaporation, lateral tributary inflow (runoff), connecting channel flow, diversion flow, change in storage, and component net basin supply. Data is included for lakes Superior, Michigan-Huron, Erie, and Ontario.
\nThis version contains data from 1950 to 2023.
\n| \n Variable \n | \n\n File Name \n | \n\n Unit \n | \n
| \n Precipitation \n | \n\n lakePrecip_AnnualRun.csv \n | \n\n mm over lake \n | \n
| \n Evaporation \n | \n\n lakeEvap_AnnualRun.csv \n | \n\n mm over lake \n | \n
| \n Runoff \n | \n\n lakeRunoff_AnnualRun.csv \n | \n\n mm over lake \n | \n
| \n Connecting Channel Flow \n | \n\n lakeOutflow_AnnualRun.csv \n | \n\n cms \n | \n
| \n Diversion Flow \n | \n\n lakeDiversion_AnnualRun.csv \n | \n\n cms \n | \n
| \n Change in Storage \n | \n\n lakeDStore_AnnualRun.csv \n | \n\n mm over lake \n | \n
| \n Component Net Basin Supply \n | \n\n lakeNBSC_AnnualRun.csv \n | \n\n mm over lake \n | \n
", "publication_date": "2026-04-27", "publisher": "Zenodo", "resource_type": { "id": "dataset", "title": { "de": "Datensatz", "en": "Dataset" } }, "rights": [ { "description": { "en": "The Creative Commons Attribution license allows re-distribution and re-use of a licensed work on the condition that the creator is appropriately credited." }, "icon": "cc-by-icon", "id": "cc-by-4.0", "props": { "scheme": "spdx", "url": "https://creativecommons.org/licenses/by/4.0/legalcode" }, "title": { "en": "Creative Commons Attribution 4.0 International" } } ], "title": "Great Lakes monthly water balance components from the Large Lakes Statistical Water Balance Model (L2SWBM)", "version": "v2023.1" }, "parent": { "access": { "owned_by": { "user": "615568" }, "settings": { "accept_conditions_text": null, "allow_guest_requests": false, "allow_user_requests": false, "secret_link_expiration": 0 } }, "communities": { "default": "e642ab7c-890e-4645-98ab-f08f88a6db31", "entries": [ { "access": { "member_policy": "open", "members_visibility": "public", "record_submission_policy": "open", "review_policy": "open", "visibility": "public" }, "children": { "allow": false }, "created": "2023-09-28T15:38:21.883011+00:00", "custom_fields": {}, "deletion_status": { "is_deleted": false, "status": "P" }, "id": "e642ab7c-890e-4645-98ab-f08f88a6db31", "links": {}, "metadata": { "curation_policy": "
Dataset will only be accepted from members of the Coordinating Committee.
", "description": "The Coordinating Committee on Great Lakes Basic Hydraulic and Hydrologic Data (Coordinating Committee) is a collaboration of the Governments of the US and Canada for the purpose of agreeing upon the hydraulic, hydrologic and vertical control data.", "page": "The Coordinating Committee on Great Lakes Basic Hydraulic and Hydrologic Data (Coordinating Committee) is a collaboration of the Governments of the United States and Canada for the purpose of agreeing upon the basic hydraulic, hydrologic and vertical control data that is required to manage the Laurentian Great Lakes and St. Lawrence River.
\nThe community will be a collection of data that have been coordinated by the committee including, but not limited to: lake levels, flows, net basin supplies.
\nFor more information about the Coordinating Committee please contact info@greatlakescc.org .
", "title": "Coordinating Committee on Great Lakes Basic Hydraulic and Hydrologic Data", "type": { "id": "organization" }, "website": "https://www.greatlakescc.org" }, "revision_id": 2, "slug": "greatlakescc", "updated": "2025-04-11T17:47:20.471337+00:00" } ], "ids": [ "e642ab7c-890e-4645-98ab-f08f88a6db31" ] }, "id": "10798859", "pids": { "doi": { "client": "datacite", "identifier": "10.5281/zenodo.10798859", "provider": "datacite" } } }, "pids": { "doi": { "client": "datacite", "identifier": "10.5281/zenodo.19831051", "provider": "datacite" }, "oai": { "identifier": "oai:zenodo.org:19831051", "provider": "oai" } }, "revision_id": 4, "stats": { "all_versions": { "data_volume": 159012295069.0, "downloads": 3678, "unique_downloads": 3410, "unique_views": 963, "views": 1045 }, "this_version": { "data_volume": 12958467.0, "downloads": 522, "unique_downloads": 463, "unique_views": 52, "views": 63 } }, "status": "published", "swh": {}, "updated": "2026-04-27T21:01:51.763776+00:00", "versions": { "index": 5, "is_latest": true } }