Salinization of terrestrial soil and freshwater ecosystems is a global phenomenon. Despite being intimately connected, a mechanistic understanding of how salinization moves from terrestrial to aquatic ecosystems as a pulse or ramp input is not well understood and can have biological consequences. We constructed experimental paired riparian-stream mesocosms to study these connections across a low-level sodium chloride (NaCl) gradient [100, 200, 300, 400, 500 mg/L; n=5 riparian-stream mesocosms per treatment and ambient control (mean ~ 7 mg/L)] added as precipitation in the riparian mesocosm and dripped directly into the stream mesocosm starting in May 2025 in the Ozark Highlands ecoregion of Arkansas. We examined the effect of NaCl delivery method at 300-mg/L NaCl by adding two additional treatments [terrestrial precipitation only (TO) and stream drip only (SO); n= 5] to be compared with the 300 mg/L treatment receiving both. We measured conductivity and temperature and estimated specific conductivity (SC) every hour for the summer (June 21 to September 20) using Hobo U-24-001 loggers. The mean summer SC over time was estimated for each replicate mesocosm (n=40) and analyzed using a linear mixed effects model. Mean SC differed across NaCl treatment (p<0.001) and increased across the NaCl gradient as expected from 210.6±16.5 μS/cm in the control to 1675.8±680.3 μS/cm in the 500 mg/L treatment. The 300-mg/L TO treatment had a lower mean SC (380.7±177.6 μS/cm) than the 300 mg/L treatment (836.6±106.8 μS/cm) receiving salty precipitation and drip. The mean SC in the 300-mg/L SO treatment (803.4±125.6 μS/cm) did not differ from the TO nor the 300-mg/L treatment receiving both, suggesting that the SO drip contributed more to streamwater SC than TO salty precipitation. While the strength of the connection between salty precipitation and mean streamwater SC was low, salty precipitation in the riparia did result in short-term spikes in stream water SC in the TO treatment and it may have more of a pulse than a ramp or press effect on stream water SC. We will examine the increase or decrease relative to baseflow SC after precipitation in each mesocosm to examine how these pulses might differ across treatments.