( CNN ) -- The Texas town of Groesbeck is on the verge of running dry . `` We have about two weeks of water left , '' Groesbeck Mayor Jackie Levingston said . Her central Texas town , population 4,300 , is one of the latest victim 's of the state 's ongoing drought . A lack of rain and the summer 's intense heat -- more than 90 days of triple-digit temperatures -- combined to dry out the Groesbeck water supply . `` We lost more water to evaporation than we were using this summer , '' Levingston said in a telephone interview . Fort Parker Lake is the city 's primary source of water . Heat evaporation took roughly 731 million gallons of water from the lake . The city used only 54 million . Groesbeck residents spent Monday waiting on the Texas Department of Parks and Wildlife to approve an emergency three-mile pipeline to divert water off the Navasota River , using a public creek as a stop-gap to shorten the distance . `` Our water comes from a river , that goes into a lake , then comes down a river . We came up with a plan to go around the lake , '' said the mayor . The city already has approval from another agency , the Texas Quality Commission on Environmental Quality , for seven miles of alternative pipeline , but with the clock ticking , Levington said residents ca n't afford the two weeks to lay the piping in the approved plan . The new plan will take the city four days to construct . `` I might as well be optimistic , '' the mayor said , laughing . There is a bit to be optimistic this week -- Thanksgiving week . Outside of the local federal prison , the school district is the biggest water user . Some 1,600 children -- many from outside the city limits in surrounding Limestone County -- draw on Groesbeck 's water supply on school days . But schools are out for the holiday this week . `` We are counting on this to extend our usage , '' said Levingston . She speculates it may buy the town an extra week . The pipeline , when it happens , is a temporary fix . It will cost $ 200,000 in construction , and $ 35,000 per month on pipe rental . The city is calculating using it for six months even though officials have drought-forecast beyond that . The city also is contracting with a well driller out of Austin to search for ground water .
Like much of Groesbeck , the town of Groesbeck suffered through about two weeks of intense heat . Triple-digit temperatures cooked the area for a summer , along with the ongoing drought . `` We lost more water to evaporation than we were using a summer , '' says the mayor . `` We have this summer of water left , '' says the mayor .