in fwou, 2000, when the water c right up to the top of hoover dam. this is what it looks like now. since 2000 lake mead has dropped 130 feet. that's hard to imagine, but picture a 13-story building on top of my head, and way up there, that's where the water used to be. so you and i talked here back in 2014. >> we did. >> reporter: and at that point i scud how critical a point are we at? >> it's a pretty critical point. >> reporter: if you look at 30 feet lower now, what point are we at? >> we're at a tipping point. it's an existential issue. for arizona, for california, for nevada. it is just that simple. >> reporter: for the first time ever the federal government is expected to declare a water shortage on the lower colorado river later this surnl. that will force automatic cuts to the water supply for nevada and arizona starting in 2022. homeowners have higher priority and at first won't feel the pain

as badly as farmers. >> if we don't have irrigation water, we can't farm. >> reporter: dan theelander is a second generation family farmer in arizona's pinole county. the water to grow his corn and alfalfa fields come from lake mead. >> next year we're going to get about 25% less water. that means we're going to have to fallow, or not plant, 25% of our land. >> reporter: in 2023 feelander and other farmers in this part of arizona are expected to lose nearly all of their water from lake mead. so they're you shall rushing to dig wells to pump ground water to try to save their farms. >> the future here, honestly i hate to say it but it's pretty cloudy. >> this is an engineering marvel for sure. >> reporter: back at hoover dam fit manager mark cook has his own concerns. lake mead has dropped so much that it's cut the dam's hydropower output by nearly 25%. >> so these are generating electricity, these things. >> exactly.

>> reporter: he wanted to show us the new turbine blades they just installed. >> so right below us right here is the brand new turbines. >> reporter: designed to keep the power flowing efficiently at rapidly dropping lake levels. at some point the dam could stop frusing electricity altogether. >> our previous number was at elevation 1050 and now we've lowered that number to 950. so we bought ourselves 100 feet. >> all those islands were underwater? >> completely submerged. >> reporter: pat mulroy says a rapidly retreating reservoir may be the new normal and the millions of people who rely on this water supply will have to quickly learn to live with less of it. >> we don't change unless we absolutely have to. but when you look out at this lake i think that moment of absolutely necessary has arrived. >> reporter: ben tracy, lake mead, nevada. the united states continues to turn the corner in the battle against coronavirus. cases, hospitalizations and deaths are all down. but there's also a disturbing trend. the average number of

vaccinations has fallen below 1 million per day. two months ago we were at 3 million a day. about 42% of americans are now fully vaccinated, but vaccine hesitancy persists. even at a hospital in texas where some health care workers are going to court to avoid taking the shot. janet shamlian has more. >> reporter: houston methodist is a massive hospital system. eight campuses, 26,000 employees. for more than a decade it has required employees to get the flu shot. when it required the covid vaccination, more than 100 employees sued. nurse jennifer bridges is the lead plaintiff in a lawsuit against her employer of seven years, houston's methodist hospital, which is requiring all workers to get the covid vaccine by today or risk losing their jobs. >> if we're not comomfortable injecting someththing into o ou bobody, done f fire us a and ma lose o our livevelihoods. >> reporteter: hospitatal c ceo mamark boom s says 99% of his employees have already been

vaccinated and calls the lawsuit nonsense. >> we have incredible real-world experience to show these are safe and effective. we have a sacred responsibility to keep our patients safe. >> reporter: you have not been vaccinated. why? >> i am not comfortable yet with it at all. there's not enough proper research out yet. it's still in the experimental phase. >> reporter: but that argument doesn't hold up to the science, says cbs news medical cocontributor r dr. davidid egg. >> experimental means you done know if it's safe and you you don't know if it works. these are thoroughly tested vaccine that's have been shown to stop the virus and are very safe. >> reporter: while the lawsuit faces an uphill battle, one part of the complaint could prove convincing. according to cbs news legal analyst rikki klieman. >> their point is that these vaccines only have been issued for emergency use only. the court could issue an injunction and really basically say, well, you can't fire these employees yet.

at least until we know if the fda is going to grant approval. but it would be a different lawsuit if the fda gives full approval. >> reporter: but even approval might not convince everyone. if the vaccine received full fda approval, would you get vaccinated? >> not anytime soon. >> reporter: pfizer and moderna have already applied for full fda approval. here at methodist workers who are unvaccinated by midnight will be placed on an unpaid two-week suspension and then likely lose their jobs after that time. >> janet shamlian in houston. the "overnight news" will be right back.

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that helps it pass through the tough stomach acid. it then works to turn down acid production, blocking heartburn at the source. with just one pill a day, you get 24-hour heartburn protection. prilosec otc. one pill a day, 24 hours, zero heartburn. as the pandemic continues to fade here in the u.s., things are starting to return to what could be considered the new normal. part of that is the return of live music to the big apple. new york's beacon theater hosted the all-star love rocks nyc benefit concert. proceeds from the show went to god's love we deliver. the charity provides nutritious home-delivered meals to people living with serious illnesses. anthony mason took in the show.

>> reporter: when the silhouetted figure who opened "love rocks nyc" -- >> come on, new york. >> interpr >> reporter: -- was revealed to be bill murray, the crowd of more than 1,000 at the beacon theater knew it was an historic night. >> because you are the first ones to see a live show in new york city in a very, very long time. >> reporter: for most of the performers it was also the big comeback. >> how does it feel to be playing in front of a live audience again? >> it's the biggest one in over a year and a half. i'm grateful. ♪ to walk a mile in his shoes ♪ >> reporter: jon bon jovi headlined the night. are you looking forward to the feeling? >> yeah, yeah. >> great to see you. go to bed. it's late for you. >> no, i'm staying through the whole thing. i missed this so much. >> feel free to get up on your feet. >> reporter: we had all missed it. for music fans this moment between artist and audience is a kind of holy communion.

♪ shot to the heart ♪ ♪ and you're too late ♪ ♪ you give love ♪ ♪ a bad name ♪ >> whoo! >> reporter: last year "love rocks" had to be held without an audience. tickets were sold out. but on show day, says co-producer greg williamson, the lockdown.enly went into >> everything shut down out of nowhere. >> and you shut down. >> and we shut down. >> reporter: the benefit concert was back this year with an audience of first responders and donors. >> first time out since before the pandemic started. >> it's another sign that things are opening back up again. >> that makes me feel better. >> reporter: in rehearsals the artists were anxious. >> i don't know if i know how to do it. >> reporter: gary clark jr. flew in from austin, texas for the gig. >> there's something about when the lights go down and people start making noise. it's like, yeah, okay.

all right. let's get after it. i've been at home changing diapers, man. so i'm ready for this. >> does it feel weird to be doing this again? >> it does. it feels very surreal. >> reporter: emily king, who sang a duet with sara bareilles -- ♪ if i can't have you ♪ -- had also performed with her earlier in april. >> i did a show with sara actually at the hollywood bowl. and as amazing as that was, there was no one there. >> reporter: they played to more than 17,0,000 emptyty seats. ♪ i'm'm thahankful thahat ♪ >> i watcheded the vidideo of t. the e silence wawas deafening.g. >> yes. itit was veryy strangnge. > emily king. let's hear it. >> sara bareilles! >> what did you miss most? >> i forgot how much i receive from singing for people. i forgot what a blelessing thats for me.. it's like the audience feels like they're the ones receiving

but really we're the ones receiving on stage. ♪ honestly, i wanna see you be brave ♪ ♪ >> the electricity was flowing again in both directions. ♪ so nathaniel ratliff singing van morrison's "caravan" not only got the audience on its feet. the singer himself left doing a jig. ♪ and british singer yola lippett the room. ♪ keeps so quiet ♪ sure, she'd done zoom concerts during the pandemic. but it's not the same. >> it's not even close, mate. no. it's not even close. >> no. >> i think we're all done with zoom. sorry for zoom shareholders. but it is what it is. ♪ ♪ i used to be like you ♪ >> reporter: how do you zoom a voice like yola's, who left us

all feeling -- well, she said it herself. ♪ when you humble yourself

under the mighty hand of god, in due time he will exalt you. hi, i'm joel osteen. i'm excited about being with you every week. i hope you'll tune in. you'll be inspired, you'll be encouraged. i'm looking forward to seeing you right here. you are fully loaded and completely equipped for the race that's been designed for you.

a year after the killing of george floyd the city of minneapolis is still struggling. crime is up. the area around what is now george floyd square remains dotted with burned-out shops. but jeff pegues found one local businessman working to rebuild with a lot of help from strangers. >> reporter: what a difference a year makes. >> what a difference. yes. >> reporter: a year ago k.b.bala was preparing to open his dream restaurant in minneapolis. this is where your restaurant used to be. >> right there. >> reporter: but in the hours after george floyd's death --

it became collateral damage. looters smashed windows and vandalized the place. thieves tried to steal his safe right in front of him. >> why are you trying to steal the safe? >> reporter: adding insult to injury, the very next day an arsonist burned the building to the ground. bala, who was a firefighter, stood helpless and defeated. that was your dream? >> oh, definitely. >> reporter: at your lowest points did you think you were ruined? >> yes. yes. i thought i was ruined. i didn't know what -- i didn't know what my next plan was. >> reporter: he started a gofundme account and within a matter of days 34,000 donors contributed more than $1 million. did you believe your eyes when you saw the money multiplying? >> oh, no. >> reporter: the firefighter who needed help got it. from people across the country who saw his story and believed

in him. >> this is the new space. >> this is the new space. >> reporter: and now his dream has come to reality again. with a new restaurant. thanks to the generosity of complete strangers. >> it's almost as if they were investing in you. >> oh, yeah. >> and investing in your dream. >> uh-huh. 100%. >> how do you pay that back? >> just pay it forward. >> reporter: he's launched a non-profit to help others in the community realize their dreams too. >> i have a different perspective on life right now. you know, what can i do as a person, you know, to impact another person's life. >> reporter: a year that saw moments of grief and anger a al gave k.b. bala and his family hope. jeff pegues, cbs news, minneapolis. and that is the "overnight news" for this tuesday. for some of you the news continues. for others check back later for "cbs thi morning."

and follow us online anytime at cbsnews.com. reporting from the nation's capital, i'm errol barnett. ♪ it's tuesday, june 8th, 2021. this is the "cbs morning news." ransom recovered. the justice department retrieves most of the money paid to the colonial pipeline hackers. how investigators turn the tables on russian cybercriminals. >> and i believe if you come to our border, you will be turned back. immigration warning. vice president kamala harris sends a stern message to people thinking about coming to the u.s. illegally. aviation history. the u.s. navy pulls off a first involving a drone and a fighter