1. Small Tributary Loads The Guadalupe River Study Lester McKee, John Oram, Jon Leatherbarrow SFEI Autumn Bonnoma, Mark Stephenson, Wes Heim MLML

2. Sampling Location

3. Sampling

4. Suspended Sediment Loads

5. HgT v SSC (all data)

6. Sources of Mercury

7. Total Mercury Loads 111% MAQ96% MAQ 133% MAQ

8. Methylmercury Concentrations

9. Methyl Mercury Loads 40 g or 0.5% of total Hg load

10. Bedload Mercury Concentrations

11. Bedload Mercury Loads 1% of total Hg load Grainsize (mm) <0.5<1<2<4<8<16<32<64Total Percent Finer Than (%)161531517598100 Bed Load Sediment Transport (t)1783150258333399391331,663 Mercury (mg/kg)0.420.240.0940.0580.029 Bed Load Mercury Transport (g)7201415911 188

12. Organic Contaminants Concentrations RangeFWMC WY 20033.4 - 90 ng/l55 ng/l WY 20040.7 - 66 ng/l26 ng/l

13. Organic Contaminants Loads

14. Organic Contaminants WY 2003 WY 2004 WY 2005

15. Project Schedule WY 2005 Report completed read for review WY 2006 funded by USACE/SCVWD / RMP Complete QAQC for all WYs and get the data on the WWW Write papers for Journal WY 2007 funded? Only WY 2006 currently guaranteed but everything in place for continuation RMP funding not yet discussed Future Modeling (if funding is found)? Explore transport processes in more detail Explore and predict the effects of management on Hg loads