8 Jan, 96. Benthic samples. Winter low tides evident at Stations E & F. Salinities in Rincon Bayou in the 30's 

 to 39.0%o at station F. 



21 Feb. %. Isotope samples. Water very low. Stations A & B. .1 m deep, salinity 33. 3%o. Rincon Bayou 



Station C ~ .05 m deep 81%o, D & E no water. Station F only puddles, refractometer 122%o. Highest 

 salinities, beginning of 1996 drought? 



19 Mar. 96. Isotope samples. No water at Stations A, B, C, D & E. ~ .05 m water at Sta. F, 68.6%o. 



9 Apt. 96. Benthic and Isotope samples. At Station G- Railroad Tresde. Water still low, sampled lake east of 

 railroad tracks ~4" deep, very turbid, collected some post larval brown shrimp for isotopes. Station A- dr)», 

 only a puddle in center "- l"deep, algae layer on top of mud. Station B, sample area diy except for water 

 between cracks in mud (water from rain fall from previous week) 50%o. Station C, dr}', only damp mud, only 

 water was in cracks and in wash-out area around posts, 98%o. Station D, no standing water, a little water in 

 cracks and animal tracks, 100%o. Station E, 1/4 inch water from where cores were taken, foot tracks from Jan. 

 98 still there, 82%o. Station E, removed mud from same depression as Jan. 96 for Hydrolab, very low water 2- 

 3" deep, 59.3%o. Station H=68 Nueces River Bridge, 6.8%o. 



13 May 96. Isotope samples. Water level back up again but salinity levels stiU high. Station C, water ver^' clear, 

 bottom covered with blue green algae mat (very green) - sampled with push-net - no sign of any shrimp only a 

 few Cyprinodon, 59.3%o. Sta. F, 51.8%o, water very turbid, lot of small swirls from fish and shnmp, some port- 

 larval brown shrimp collected. Station G, (Tresde) 51.7%, water turbid, brown shrimp numerous, saw redfish 

 feeding so shallow its back was out of the water. Station H = 68-river 8.9%o, collected brown shrimp and blue 

 crabs with push-net. 



1 June 96. Isotope samples. Station H=68, 9.9%o collected brown shrimp, spot and Rangia. Station C, 70.4%o, 

 water from high tide was flowing through upper culverts C-5 & C-4 through diversion channel to the Nueces 

 River. 



12 July 96. Benthic samples. Stations A & B, no water, took cores on dry land, very Uttie moisture in sediment. 

 Stations C & D. Small amount of water, saltnit)' C=159.2%o, D=120%o. Stations E & F water shallow, 

 85.86%o, no shrimp, picture of algal mats on slides. Station G=Trestle, 84%o no shrimp. Station H=68 River, 

 2.1%o, push-net for shrimp, caught 1 brown shrimp, saw a couple of large shrimp avoiding net. 



22 Oct. %. Benthic samples. Stations A & B - water back ~ .1 m, 40%o. Stations C, D, E and F - water back, 

 evidence of lower salinity input from the River Diversion Chaimel 25.1%o at C-* 46.4%o at F. 



6 Jan. 97. Benthic samples. Stations A & B, bottom covered with dense bed of Ruppia. 52.4%o, Salinity 

 gradient from C to F = 25.0%o to 56.4%o. Stations E and F sediment surface with layer of algal mat. 

 Station H = 68 River 0%o. Low flow coming over dam. 



23 Apt. 97. Benthic samples. Stations A & B, low oxygen, water a thick green color, Kuppia seems to be 

 declining, not as thick as Jan. 97. Stations C, D, E, and F, salinity down to 15-16%o. Station D, lot of medium 

 to large blue crabs and some reds and drum. Station E, water shallow 2-3 in., slight outgoing current 1045, algal 

 mat over most of bottom, took benthic samples from bare bottom. 



2 July 97. Benthic samples. Stations A & B, salinity down to 4.8%o, water up, Ruppia covering most of bottom, 

 very healthy, to surface of water. Station C, water ~ 1 ft deep at shoreline, evidence of being higher, Christine's 

 experimental plot completely under water. Salinity from C to F was 0.2 to 4.4%o. Station H=68 at river 0%o. 

 Station 62 Whidedge station in flats north of secondary' diversion channel, puddle at culvert was 0%o, water in 

 flat on way to 62 was 4%o and at 62 stake 2%o Station D, washout in culvert on road. 



28 Oct. 97. Benthic samples. Light rain, low salinity at all stations. Stations A & B, 4%o C to F, 0.3 to 4.1%o. 

 Water level down from the flood event in July 97. 



G-2 ^ Field Notes and Observations from Benthic Sampling Trips 



