; (2) conductivity; (3) oxygen concentration; (4) nutrient load; (5) water temperature; and (6) sediment load. (b) Data needs assessment The Under Secretary shall assess the need for additional data to assess and predict the effect of the flooding and freshwater discharge described in subsection (a). (c) Inventory of data needs Based on the assessments required by subsections (a) and (b), the Under Secretary shall create an inventory of data needs with respect to the flooding and freshwater discharge described in subsections (a) and (b). (d) Planning In planning for the collection of additional data necessary for ecosystem-based modeling of the effect of the flooding and freshwater discharge described in subsections (a) and (b), the Under Secretary shall use the inventory created under subsection (c). 8. Tornado warning improvement Section 103 of the Weather Research and Forecasting Innovation Act of 2017 ( 15 U.S.C. 8513 ) is amended— (1) by redesignating subsections (c) and (d) as subsections (d) and (e), respectively; and (2) by inserting after subsection (b) the following: (c) Innovative observations The Under Secretary shall ensure that the program periodically examines the value of incorporating innovative observations, such as acoustic or infrasonic measurements, observations from phased array radars, and observations from mesonets, with respect to the improvement of tornado forecasts, predictions, and warnings. . 9. Hurricane forecast improvement program Section 104(b) of the Weather Research and Forecasting Innovation Act of 2017 ( 15 U.S.C. 8514(b) ) is amended— (1) in paragraph (2), by striking ; and and inserting a semicolon; (2) in paragraph (3), by striking the period at the end and inserting ; and