“…Carbon dioxide saturation of stream waters in our study exceeded the levels of saturation reported from larger rivers, such as the Amazon (Stallard & Edmond, 1987), Lena (Huh et al, 1998), Thames (Neal, Harrow, & Williams, 1998), Hudson (Raymond, Caraco, & Cole, 1997), St. Lawrence (Hélie, Hillaire-Marcel, & Rondeau, 2002), and Niger Rivers (Martins & Probst, 1991) and from smaller rivers in the United Kingdom (Neal, House et al, 1998) and Spain (Pinol & Avila, 1992). In those studies, river water usually was no more than 5-20 times supersaturated, although some of the small rivers in Spain were as much as 55 times supersaturated (Pinol & Avila, 1992).…”