Flood waters from Tropical Storm Harvey continue to rise in Houston, Texas, forcing residents to leave their homes to seek refuge in community shelters. Reaching these shelters has been perilous, and many volunteers have taken their boats to the submerged streets to aid the elderly and vulnerable escape.
Harvey, which made landfall north of Corpus Christi late Friday evening, is expected to dump upwards to 40 inches of rain in areas of Texas through the end of the week.

Houston seeks refuge from Harvey
People walk through the flooded waters of Telephone Rd. in Houston on August 27, 2017 as the US fourth city city battles with tropical storm Harvey and resulting floods. / AFP PHOTO / Thomas B. Shea

Houston seeks refuge from Harvey
A man dodges a wake in flood waters during the aftermath of Hurricane Harvey August 27, 2017 in Houston, Texas.
/ AFP PHOTO / Brendan Smialowski

Houston seeks refuge from Harvey
HOUSTON, TX - AUGUST 28: People walk down a flooded street as they evacuate their homes after the area was inundated with flooding from Hurricane Harvey on August 28, 2017 in Houston, Texas. Joe Raedle/Getty Images/AFP

Houston seeks refuge from Harvey
HOUSTON, TX - AUGUST 28: People are rescued from a flooded neighborhood after it was inundated with rain water, remnants of Hurricane Harvey, on August 28, 2017 in Houston, Texas. Scott Olson/Getty Images/AFP

Houston seeks refuge from Harvey
HOUSTON, TX - AUGUST 28: Volunteer search and rescuers from Passion Pursuit film production company launch their motor boat near Bray Bayou and Loop 610 to rescue flood victims in the Meyerland neighborhood after Hurricane Harvey inundated the area August 28, 2017 in Houston, Texas. Erich Schlegel/Getty Images/AFP

Houston seeks refuge from Harvey
A submerged car is seen on Interstate 610 North on August 27, 2017 in Houston as the city battles with tropical storm Harvey and resulting floods. / AFP PHOTO / Thomas B. Shea

Houston seeks refuge from Harvey
HOUSTON, TX - AUGUST 28: A person walks through a flooded street with a dog after the area was inundated with flooding from Hurricane Harvey on August 28, 2017 in Houston, Texas. Joe Raedle/Getty Images/AFP

Houston seeks refuge from Harvey
A graveyard is seen as it floods during the aftermath of Hurricane Harvey August 27, 2017 in Pearland, Texas.
/ AFP PHOTO / Brendan Smialowski

Houston seeks refuge from Harvey
HOUSTON, TX - AUGUST 28: Dean Mize holds a baby as he helps evacuate people from their homes after the area was inundated with flooding from Hurricane Harvey on August 28, 2017 in Houston, Texas. Joe Raedle/Getty Images/AFP

Houston seeks refuge from Harvey
HOUSTON, TX - AUGUST 28: Barb Davis, 74. is helped to dry land after being rescued from her flooded neighborhood after it was inundated with rain water, remnants of Hurricane Harvey, on August 28, 2017 in Houston, Texas. Scott Olson/Getty Images/AFP

Houston seeks refuge from Harvey
HOUSTON, TX - AUGUST 28: Shardea Harrison looks on at her 3 week old baby Sarai Harrison being held by Dean Mize as he and Jason Legnon used his airboat to rescue them from their home after the area was inundated with flooding from Hurricane Harvey on August 28, 2017 in Houston, Texas. Joe Raedle/Getty Images/AFP

Houston seeks refuge from Harvey
HOUSTON, TX - AUGUST 28: Dean Mize holds children as he and Jason Legnon use an airboat to rescue people from homes that are inundated with flooding from Hurricane Harvey on August 28, 2017 in Houston, Texas. Joe Raedle/Getty Images/AFP

Houston seeks refuge from Harvey
HOUSTON, TX - AUGUST 28: People make their way out of a flooded neighborhood after it was inundated with rain water, remnants of Hurricane Harvey, on August 28, 2017 in Houston, Texas. Scott Olson/Getty Images/AFP

Houston seeks refuge from Harvey
HOUSTON, TX - AUGUST 28: An evacuee is helped to dry land after her home was inundated with flooding from Hurricane Harvey on August 28, 2017 in Houston, Texas. Joe Raedle/Getty Images/AFP

Houston seeks refuge from Harvey
HOUSTON, TX - AUGUST 28: Rescuers help a man and children from flooding from Hurricane Harvey on August 28, 2017 in Houston, Texas. Joe Raedle/Getty Images/AFP

Houston seeks refuge from Harvey
HOUSTON, TX - AUGUST 28: Volunteers get a briefing at the George Brown Convention Center that has been turned into a shelter run by the American Red Cross to house victims of the high water from Hurricane Harvey on August 28, 2017 in Houston, Texas. Erich Schlegel/Getty Images/AFP

Houston seeks refuge from Harvey
HOUSTON, TX - AUGUST 28: Evacuees fill up cots at the George Brown Convention Center that has been turned into a shelter run by the American Red Cross to house victims of the high water from Hurricane Harvey on August 28, 2017 in Houston, Texas. Erich Schlegel/Getty Images/AFP

Houston seeks refuge from Harvey
HOUSTON, TX - AUGUST 28: People are rescued from a flooded neighborhood after it was inundated with rain water, remnants of Hurricane Harvey, on August 28, 2017 in Houston, Texas. Scott Olson/Getty Images/AFP

Houston seeks refuge from Harvey
HOUSTON, TX - AUGUST 28: People are rescued from a flooded neighborhood after it was inundated with rain water, remnants of Hurricane Harvey, on August 28, 2017 in Houston, Texas. Scott Olson/Getty Images/AFP

Houston seeks refuge from Harvey
Flood victims eat and rest at a shelter in the George R. Brown Convention Center during the aftermath of Hurricane Harvey on August 28, 2017 in Houston, Texas. / AFP PHOTO / Brendan Smialowski

Houston seeks refuge from Harvey
WESTLAKE, TX - AUGUST 29: Texas Army National Guard members Sergio Esquivel, left, and Ernest Barmore carry 81-year-old Ramona Bennett after she and other residents were rescued from their Pine Forest Village neighborhood due to high water from Hurricane Harvey August 29, 2017 in Houston, Texas. Erich Schlegel/Getty Images/AFP

Houston seeks refuge from Harvey
Volunteers sort through donated clothing at a shelter in the George R. Brown Convention Center during the aftermath of Hurricane Harvey on August 28, 2017 in Houston, Texas.
/ AFP PHOTO / Brendan Smialowski

Houston seeks refuge from Harvey
HOUSTON, TX - AUGUST 28: Flood evacuee Dorothy Baker, 89, has a snack with her daughter Bonnie Baker, 64, at the George Brown Convention Center which has been turned into a shelter run by the American Red Cross to house victims of the high water from Hurricane Harvey on August 28, 2017 in Houston, Texas. The Baker's home in the Meyerland neighborhood was underwater. Erich Schlegel/Getty Images/AFP

Houston seeks refuge from Harvey
Flood victims arrive at a shelter in the George R. Brown Convention Center during the aftermath of Hurricane Harvey on August 28, 2017 in Houston, Texas. / AFP PHOTO / Brendan Smialowski

Houston seeks refuge from Harvey
HOUSTON, TX - AUGUST 28: Evacuees fill up cots at the George Brown Convention Center that has been turned into a shelter run by the American Red Cross to house victims of the high water from Hurricane Harvey on August 28, 2017 in Houston, Texas. Erich Schlegel/Getty Images/AFP

Houston seeks refuge from Harvey
HOUSTON, TX - AUGUST 28: Flood evacuee from Houston's 5th Ward Korbey Haley shares a light moment with his son Jordan Haley, 6 at the George Brown Convention Center which has been turned into a shelter run by the American Red Cross to house victims of the high water from Hurricane Harvey on August 28, 2017 in Houston, Texas. Erich Schlegel/Getty Images/AFP