Revision History for Scientific Investigations Report 2020–5099

By Toby D. Feaster, Katharine R. Kolb, Jaime A. Painter, and Jimmy M. Clark

Methods for Estimating Selected Low-Flow Frequency Statistics and Mean Annual Flow for Ungaged Locations on Streams in Alabama
-----------------------------------------------------
Posted online September 21, 2020
-----------------------------------------------------
Revised and reposted September 29, 2020, version 1.1
Added a cooperator to the list on the front cover and on the title page: Alabama Department of Environmental Management.

In table 1, the source for mean annual precipitation was changed to PRISM 2010 (https://prism.oregonstate.edu/normals/).
-----------------------------------------------------
Revised and reposted November 20, 2020, version 1.2
During the reconciliation review of SIR 2020-5099, it was discovered that the drainage area and mean annual precipitation were incorrect for station 02369000. 

Those data were corrected and on June 12, 2020, the author subsequently updated the regression equations for the 1Q10, 7Q2, 7Q10, and mean annual flow statistics. 

The reconciliation review was compiled on July 27, 2020. When updating the SIR based on that review, the data in tables 2 and 3 should have been updated 
to reflect the regression equations that were computed on June 12, 2020, but were not. Tables 2 and 3 have now been updated to reflect the final regression results from the June 12, 2020, corrections.