Published 21 hours ago • loading... • Updated 21 hours agoShow Less IconToxic algae closes Boulder Reservoir swim beach on hottest day of year so far Summary by KMGHBoulder's swim beach shut down Monday after officials detected toxic blue-green algae in the reservoir, closing a popular summer destination on the hottest day of the year so far.Share menu1 Articles1 ArticlesAllLeftCenter1RightSearch IconSort IconKMGHCenterFactualityOwnershipToxic algae closes Boulder Reservoir swim beach on hottest day of year so farBoulder's swim beach shut down Monday after officials detected toxic blue-green algae in the reservoir, closing a popular summer destination on the hottest day of the year so far.21 hours agoRead Full ArticleThink freely.Subscribe and get full access to Ground NewsSubscriptions start at $9.99/yearSubscribeBlindspot Title And LogoStories disproportionately reported by the Left or the RightSee More BlindspotsCoverage DetailsTotal News Sources1Leaning Left0Leaning Right0Center1Last Updated15 hours agoBias Distribution100% CenterBias Distribution Too Big Arrow IconToo Big Arrow IconCaret Up Icon100% of the sources are Center100% CenterC 100%Factuality Info IconTo view factuality data please Upgrade to PremiumOwnership Info IconTo view ownership data please Upgrade to VantageKMGH broke the news 21 hours ago on Monday, July 20, 2026.Too Big Arrow IconCaret Down IconSources are mostly out of (0)Similar News TopicsBoulder, Colorado Plus IconShow AllBlindspot Title And LogoStories disproportionately reported by the Left or the RightSee More BlindspotsSimilar News TopicsBoulder, Colorado Plus IconShow All