Without Denver’s robust general fund reserves, the coronavirus pandemic and subsequent economic slump would have wiped out a substantial portion of city services, Chief Financial Officer Brendan Hanlon said. That safety net has proved its worth time and time again, Hanlon said, and should the virus spike again late this year or in 2021, Denver will have an estimated $163 million as a fallback. But that cushion is well below what it had been in the spring and isn’t enough to cover the entire $190 million shortfall expected for Denver’s tax revenue next year.