Description
With the growth in Alpharetta and the replacement of older smaller homes with much larger homes, when will The City do something to enhance water retention on these new properties It is becoming a major problem for the homes downstream The runoff caused by the significantly larger cement footprints has dramatically changed the drainage and flow needs of the creek downstream
16 Comments
Acknowledged City of Alpharetta (Verified Official)
Ric Anderson (Registered User)
Ric Anderson (Registered User)
City of Alpharetta (Verified Official)
Ric Anderson (Registered User)
An anonymous SeeClickFix user (Registered User)
Ric Anderson (Registered User)
COAADMIN (Verified Official)
City of Alpharetta (Verified Official)
citizen (Registered User)
Closed City of Alpharetta (Verified Official)
Reopened citizen (Registered User)
Acknowledged City of Alpharetta (Verified Official)
City of Alpharetta (Verified Official)
• Any development adding 1,000-4,999 sf of impervious pavement, roof, or other hard surface is required to design and install a stormwater runoff reduction measure such as an infiltration trench or engineered rain garden. The intent is for this new hard surface to drain to this measure and soak in the first inch of water runoff.
• Any development adding or replacing 5,000 sf or more of impervious pavement, roof, or other hard surface is required to design and install a full detention measure. This measure is designed by a professional engineer to infiltrate the first inch of rain and slow down the remaining runoff to predevelopment rates. Most of the practices used to accomplish this in residential lots are underground vaults, pipes, or rock filled trenches.
These requirements can be found in Section 3 of the Alpharetta Stormwater Policy Handbook on the city’s website here: https://www.alpharetta.ga.us/docs/default-source/public-works/stormwater/alpharetta-stormwater-policy-handbook.pdf?sfvrsn=5746cfab_12
citizen (Registered User)
Closed City of Alpharetta (Verified Official)