Biological Systems Engineering, College of Agriculture and Food Sciences, Florida A&M University, Tallahassee, Florida;

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1 Supplementary Material for Hydrologic Characteristics of Streamflow in the Southeast Atlantic and Gulf Coast Hydrologic Region during and Conceptual Map of Potential Impacts Aavudai Anandhi 1, Christy Crandall 2 and Chance Bentley 3 1 Biological Systems Engineering, College of Agriculture and Food Sciences, Florida A&M University, Tallahassee, Florida; anandhi@famu.edu 2 School of the Environment, Florida A&M University, Tallahassee, Florida; christy.crandall@famu.edu 3 College of Agriculture and Food Sciences, Florida A&M University, Tallahassee, Florida; Hydrology 2018, 5

2 Hydrology 2018, 5 2 of 6 Figure S1. Monthly distribution of streamflow statistics from the 30 stations during the study period

3 Hydrology 2018, 5 3 of 6 Figure S2. Boxplot of annual distribution of magnitude of low flow streamflow statistics from the 30 stations during the study period

4 Hydrology 2018, 5 4 of 6 Figure S3. Boxplot of annual distribution of magnitude of low flow streamflow statistics from the 30 stations during the study period Figure S4. Scatter plot to represent the relationship was observed between the low and high flow parameters and the drainage area. Table S1. Documentation of the literature was reviewed using search words (in quotes) and the corresponding number of studies (in parenthesis). 1 "ROANOKE " (5,750) 2 "FISHING CREEK" (1840) 3**** "FLAT " NC (1,010) 4 NEUSE " (9,860) "ROANOKE basin" (788) "FISHING CREEK basin" (8) "FLAT basin" NC (18) NEUSE basin" (1,620) 5^ "DEEP " (5,380) "DEEP basin" (582) 6 "YADKIN " "YADKIN (1640 ) basin" (117) "ROANOKE "FISHING CREEK "FLAT NC NEUSE (4) "DEEP "YADKIN "ROANOKE (2) "FISHING CREEK "FLAT NC NEUSE (1) "DEEP "YADKIN

5 Hydrology 2018, 5 5 of 6 7 "PEE DEE " "PEE DEE "PEE DEE "PEE DEE (2,300) basin" (264) (1) 8 "LINVILLE " "LINVILLE "LINVILLE "LINVILLE (311) basin" (7) 9** "BROAD " "BROAD "BROAD "BROAD (13,900) basin" (513) 10 "SALUDA " "SALUDA "SALUDA "SALUDA (912) basin" (64) 11 " SAVANNAH " SAVANNAH " SAVANNAH " SAVANNAH " (96,000) basin" (868) (5) (5) 12 " OCMULGEE " OCMULGEE " OCMULGEE " OCMULGEE " (1430) basin" (71) 13 " OCONEE " " OCONEE " OCONEE " OCONEE (2,250) basin" (163) (1) 14* " ST. MARYS " " ST. MARYS " ST. MARYS " ST. MARYS Florida (1,760) basin" florida (43) 15 " SUWANNEE " SUWANNEE " SUWANNEE " SUWANNEE " (15,000) basin" (876) (5) (1) 16 " OCHLOCKONEE " OCHLOCKONEE " OCHLOCKONEE " OCHLOCKONEE " (827) basin" (76) 17 " " " CHATTAHOOCHEE " CHATTAHOOCHEE CHATTAHOOCHEE CHATTAHOOCHEE " (7,110) basin" (605) 18 " FLINT " " FLINT basin" " FLINT " FLINT (7,520) (1,840) (14) (2) 19 " APALACHICOLA " APALACHICOLA " APALACHICOLA " APALACHICOLA " (6,150) basin" (425) (1) 20 " OOSTANAULA " OOSTANAULA " OOSTANAULA " OOSTANAULA " (295) basin" (2) 21 " ETOWAH " " ETOWAH " ETOWAH " ETOWAH (1,580) basin" (343) (1) 22 " TALLAPOOSA "TALLAPOOSA " TALLAPOOSA " TALLAPOOSA " (3,760) basin" (54) 23 " CAHABA " "CAHABA " CAHABA " CAHABA (1,390) basin" (86)

6 Hydrology 2018, 5 6 of 6 24 " BLACK WARRIOR " (1,940) "BLACK WARRIOR basin" (89) " BLACK WARRIOR " BLACK WARRIOR Search Results in google scholar on 3/30/2018 * results could include St Marys River flowing through Ontario (Canada) and Michigan (US); without Florida the values were " ST. MARYS " Florida (3,100) " ST. MARYS basin" (47) " ST. MARYS " ST. MARYS (1) ** results could include Broad River, a tributary of Savannah river in Georgia **** results could include other Flat River s that are flowing through Michigan, Rode Island. Without NC the values were "FLAT " (3,610) "FLAT basin" (65) "FLAT "FLAT ^ results could include Deep river town and other establishments when NC not included "DEEP " (20,400) "DEEP basin" (551)"DEEP "DEEP Table S2. Summary of missing data by station and missing-time period intervals. USGS MISSING MISSING STATION NAME NMISS STATION ID INTERVAL 1 INTERVAL ROANOKE at NIAGARA, VA 4 12/09/ /08/ /10/ /10/ ROANOKE at ROANOKE RAPIDS, NC 2 10/1/ /1/ FISHING CREEK NEAR at ENFIELD, NC 2 10/1/ /1/ FLAT at BAHAMA, NC 4 11/16/ /01/ /17/ /02/ SALUDA NEAR at COLUMBIA, SC 2 10/05/ /06/ SAVANNAH at AUGUSTA, GA 1 12/14/ OCONEE at MILLEDGEVILLE, GA 1 1/15/ /01/1938, 03/16/ ETOWAH at GA 1 LOOP, 3/8/ /17/2017, 9 NEAR ROME, GA 3/10/2017, 05/25/ /13/2017, 05/26/ CAHABA at CENTREVILLE, AL 4 10/21/ /06/ /22/ /07/ BLACK WARRIOR at OLIVER LOCK AND 11/16/ DAM at NORTHPORT, AL 11/20/2015