Urban Tree Canopy
Roanoke Valley (Roanoke County, City of Salem, City of Roanoke, Town of Vinton):
Source: Urban Tree Canopy Assessment (2021)
Last Updated By RVARC: January 2026
Solar Energy Projects
Virginia:
137 Developments
Botetourt County:
1 Development (Wind)
Franklin County:
1 Development (Solar)
Source: Renewable Energy Development Atlas, VDEQ (2025)
Last Updated By RVARC: January 2026
Square Miles within FEMA Designated Flood Hazard Area
Alleghany County:
19.26
Botetourt County:
31.89
Craig County:
5.48
Franklin County:
30.16
Roanoke County:
7.81
City of Covington:
1.24
City of Roanoke:
4.85
City of Salem:
3.14
Source: EPH Tracking Network, CDC (2018)
Last Updated By RVARC: January 2026
Natural Hazard Risk Index
Risk Index scores and ratings are based on data for Expected Annual Loss due to natural hazards, Social Vulnerability, and Community Resilience.
Alleghany County:
Risk Index: Very Low
Score: 38.07
Botetourt County:
Risk Index: Very Low
Score: 18.10
Craig County:
Risk Index: Very Low
Score: 6.23
Franklin County:
Risk Index: Very Low
Score: 42.72
Roanoke County:
Risk Index: Relatively Low
Score: 52.19
City of Covington:
Risk Index: Very Low
Score: 9.67
City of Roanoke:
Risk Index: Relatively Low
Score: 72.87
City of Salem:
Risk Index: Very Low
Score: 18.64
Source: Resilience Analysis and Planning Tool, FEMA (December 2025)
Last Updated By RVARC: January 2026
Annual Number of Extreme Heat Days
Heat Metric: Daily Maximum Temperature, Relative Threshold: 90th Percentile
Alleghany County:
2020: 28 days
2021: 41 days
2022: 42 days
2023: 29 days
Botetourt County:
2020: 21 days
2021: 29 days
2022: 34 days
2023: 23 days
Craig County:
2020: 28 days
2021: 30 days
2022: 36 days
2023: 23 days
Franklin County:
2020: 12 days
2021: 23 days
2022: 27 days
2023: 21 days
Roanoke County:
2020: 14 days
2021: 28 days
2022: 27 days
2023: 22 days
City of Covington:
2020: 27 days
2021: 37 days
2022: 42 days
2023: 28 days
City of Roanoke:
2020: 16 days
2021: 28 days
2022: 28 days
2023: 22 days
City of Salem:
2020: 16 days
2021: 28 days
2022: 29 days
2023: 22 days
Source: EPH Tracking Network, CDC (2023)
Last Updated By RVARC: January 2026
Annual Number of Extreme Precipitation Days
Precipitation Metric: Relative Threshold: 90th Percentile
Alleghany County:
2020: 27 days
2021: 23 days
2022: 20 days
2023: 21 days
Botetourt County:
2020: 33 days
2021: 23 days
2022: 27 days
2023: 24 days
Craig County:
2020: 31 days
2021: 19 days
2022: 28 days
2023: 23 days
Franklin County:
2020: 40 days
2021: 21 days
2022: 35 days
2023: 30 days
Roanoke County:
2020: 40 days
2021: 28 days
2022: 31 days
2023: 24 days
City of Covington:
2020: 21 days
2021: 17 days
2022: 23 days
2023: 21 days
City of Roanoke:
2020: 38 days
2021: 24 days
2022: 29 days
2023: 22 days
City of Salem:
2020: 33 days
2021: 22 days
2022: 31 days
2023: 22 days
Source: EPH Tracking Network, CDC (2023)
Last Updated By RVARC: January 2026
Dams
Virginia:
3,712 dams
Alleghany County:
13 dams
Casteel Hunt Club Dam, Clifton Forge Dam, Covington Mill Dam No 1, Covington Mill Dam No 2, Gathright Dam, Hanna Dam, Jeremy Thomas Dam, Landfill No. 2 Dam, Pond Lick Branch Dam, West Virginia Pulp Dam A and B, WestRock #1 Embankment Dam, Wright Dam
Botetourt County:
19 dams
Atherholt Dam, Bayne Dam, Botetourt Country Club Dam, Carvin Cove Dam, Deming Dam, Fairview Pond Dam, Goldberg Beaver Dam, Grandview Dam, Greenfield Lake Dam, Greenwood Sediment Pond Dam, Hancock Dam, Lake Catherine Hunt Club Dam, Orchard Lake Dam, Rainbow Forest Dam, Roanoke Cement Holdings Dam, Stokes Dam, Tinker Creek Dam, Wilburn Dam
Craig County:
7 dams
Craig County Dam #5,#6,#7, Johns Creek Dam #1-#4
Franklin County:
53 dams
Adams Dam, Adkins Dam, Altice Mill Dam, Aud Dam, Barnhart Dam, Belcher Dam, Bernard Dam, Blackwater River Dam, Boozier Dam, Bowmans Dam, Brooks Dam, Brumback Dam, Burdettes Dam, Carmon Bennett Dam, Carter Family Dam, Cobbs Dam, Custer Dam, Diamond S Farm Dam, Dillon Dam, Fitts Dam, Flora Dam, Franklin County Parks and Recreation Dam, Hallacher Dam, Heine Dam, Hetrick Dam, Hodges Dam, Jones Dam, Kennett Dam, Lakewatch Resolution Company Dam, Lawless Dam, Lesko Dam, Lullwater Dam, Martin Dam, Meeks Dam, Melody Lake Dam, Moore Dam, Musgrove Dam, Nakhle Dam, Norford Dam, Pigg River Dam, Prillaman Dam, Rakes Tavern Dam, Richardson Dam, Snyder Dam, Southwest Builders Dam, Strickland Dam, Sunset Lake Dam, Upper Blackwater River Dam #4, Upper Blackwater River Dam #6, Walker Dam, Woody Dam, Worley Dam #1, Worley Dam #2
Roanoke County:
15 dams
Niagara Dam, Loch Haven Lake Dam, Orchard Dam, Clifford D. Craig Memorial Dam, Woods End Dam, Cotton Hills Dam, Amrhein Dam, Darr Dam, Gustafson Dam, Salem Stone Dam, Lewis Jamison Dam, Charles Ray Cox Dam, Roanoke College Dam, Linda Howell Dam, Ardagh Dam
City of Roanoke:
5 dams
Mason Mill Dam, City of Roanoke Dam #1, City of Roanoke Dam#2, Spring Valley Lake Dam, Windsor Lake Dam
Source: Dam Safety and Floodplains Open Data Hub, DCR (2024)
Last Updated By RVARC: January 2026
