Government
WilCo adopts updated floodplain map Williamson County commissioners adopted the Atlas 14 Floodplain Mapping Study on March 24, which identies ood-prone areas to guide growth and development in the county to help reduce ood risk, according to county documents. How it works The Atlas 14 study identies ood-prone areas using updated scientic rainfall data from the National Oceanic and Atmospheric Administra- tion, along with topographic information. Williamson County will use the study for drainage and oodplain management in the county’s unincorporated areas, according to a news release. The Texas Water Development Board accepted the study in 2025, and with recent court approval, the study can be used to regulate the oodplains and enforce permits for encroachment.
Park Street walking path reconsidered A proposed shared-use path along West Park Street is expected to now be built along Buttercup Creek Boulevard. A feasibility study, conducted by the city, determined that a shared-use path on the north side of Buttercup Creek Boulevard would be the best option based on a variety of factors, including the cost of design and construction as well as potential conicts with utility lines.
Williamson County 100-year event precipitation
The county’s 24-hour rainfall range has increased from 8-10 to 10-12 inches. In a worst-case type storm, this is about how much rain could fall in a single day
10-11 inches
11-12 inches
12-13 inches
Williamson County
35
183
29
95
SOURCE: WILLIAMSON COUNTYCOMMUNITY IMPACT
N
The impact In the past decade, Williamson County has expe- rienced severe ooding, including in 2010, 2015 and 2017. Most recently, deadly oods over the July 4, 2025, weekend devastated parts of the county. The initiative to update countywide oodplain information dates back to 2021. Neighboring Travis County adopted the updated oodplain map in 2019.
N. LAKELINE BLVD.
183
Former walking path plan
Future walking path plan
N
5/15/26.
16
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