Account-level storage usage can be monitored via:

A. The Snowflake Web Interface (UI) in the Databases section

B. The Snowflake Web Interface (UI) in the Account -> Billing & Usage section

C. The Information Schema -> ACCOUNT_USAGE_HISTORY View

D. The Account Usage Schema -> ACCOUNT_USAGE_METRICS View

Reference: https://docs.snowflake.com/en/user-guide/admin-usage-billing.html