 Animal tracks on dry bottom of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
 Caked mud on dry bottom of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
 Caked mud on the bottom of Somerville Lake in Birch Creek Park. Texas, September 17, 2011
 Caked mud on bottom of Lake Somerville near Birch Creek Unit of Somerville Lake State Park. Texas, October 4, 2022
 Caked mud on bottom of Lake Somerville near Birch Creek Unit of Somerville Lake State Park. Texas, October 4, 2022
 Caked mud on bottom of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Flat caked mud on bottom of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Caked mud on dried bottom of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Caked mud with grass on bottom of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Caked mud with green grass on bottom of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Fresh grass on caked mud on bottom of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Caked mud overgrown by grass on bottom of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Flat caked mud and mussel shells on bottom of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Caked mud covered by green grass on bottom of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Fresh green grass growing over caked mud on bottom of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Dry bottom of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
 Rotting log on dry bottom of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
 Sedges on dry bottom of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
 Old tree stump on dry bottom of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
 Rattlebush colonizing dry bottom of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
 Caked mud of Somerville Lake in Birch Creek Park. Texas, September 17, 2011
 Caked mud in Somerville Lake in Birch Creek Park at sunrise. Texas, September 17, 2011
 Caked mud of a river near Somerville Lake in Big Creek Park. Texas, August 13, 2011
 Dry mud on the bottom of Somerville Lake in Birch Creek Park. Texas, September 17, 2011
 Cracks in mud on the bottom of Somerville Lake in Birch Creek Park. Texas, September 17, 2011
 Cracked mud on the bottom of Somerville Lake in Birch Creek Park. Texas, September 17, 2011
 Dry bottom of Somerville Lake with sedges in Birch Creek Park. Texas, September 17, 2011
 Some small sedge on a dry lake bottom on a shore of Somerville Lake near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2020
 Emerging rattlebush on the bottom of Somerville Lake in Birch Creek Park. Texas, September 17, 2011
 Caked mud on shores of Lake Somerville near Birch Creek Unit of Somerville Lake State Park. Texas, October 4, 2022
 Dried bottom of Lake Somerville near Birch Creek Unit of Somerville Lake State Park. Texas, October 4, 2022
 Dried bottom of Lake Somerville near Birch Creek Unit of Somerville Lake State Park. Texas, October 4, 2022
 Old oak stump on bottom of dried Somerville Lake near Birch Creek Unit of Somerville Lake State Park. Texas, December 29, 2023
 Cracks in mud on bottom of dried Somerville Lake near Birch Creek Unit of Somerville Lake State Park. Texas, December 29, 2023
 Dried cracked mud on bottom of Lake Somerville near Birch Creek Unit of Somerville Lake State Park. Texas, October 4, 2022
 Cracked soil on bottom of Lake Somerville near Birch Creek Unit of Somerville Lake State Park. Texas, October 4, 2022
 Dried bottom with cracked mud of Lake Somerville near Birch Creek Unit of Somerville Lake State Park. Texas, October 4, 2022
 Shells on dry bottom of Somerville Lake in Birch Creek Unit of Somerville Lake State Park, July 14, 2013
 Tree root on dry bottom of Somerville Lake in Birch Creek Unit of Somerville Lake State Park, July 14, 2013
 Petrified wood on dry bottom of Somerville Lake in Birch Creek Unit of Somerville Lake State Park, July 14, 2013
 Skeleton of alligator gar on dry bottom of Somerville Lake in Birch Creek Unit of Somerville Lake State Park, July 14, 2013
 Rattlebush growing on dry bottom of Somerville Lake in Birch Creek Unit of Somerville Lake State Park, July 14, 2013
 Weathered oak wood on bottom of dried Somerville Lake near Birch Creek Unit of Somerville Lake State Park. Texas, December 29, 2023
 Green algae on bottom of dried Somerville Lake near Birch Creek Unit of Somerville Lake State Park. Texas, December 29, 2023
 Dried bottom with green grass of Lake Somerville near Birch Creek Unit of Somerville Lake State Park. Texas, October 4, 2022
 Animal s trail on a floodplain at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 5, 2020
 Animal droppings with some seeds at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 3, 2022
 Dried bottom with emerging green grass of Lake Somerville near Birch Creek Unit of Somerville Lake State Park. Texas, October 4, 2022
 Bones and a skull of a small animal in an oak grove at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023
 A trail near Somerville Lake in Birch Creek State Park. Texas, August 21, 2011
 Dry buttonbush on a shore of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
 Dry vegetation on a shore of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
 Mud with green grass on bottom of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Dried mud and grass on bottom of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Cracks and grass on bottom of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Carcass of an animal on shores of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Dying vegetation on shores of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
 Cracked soil and grass on bottom of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Green grass on dried bottom of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Cracked soil with some grass on bottom of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Skeleton of an animal among flatsedge on shores of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Cracks in soil overgrown by grass on bottom of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Deep cracks in soil overgrown by grass on bottom of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Cracked soil covered by green grass on bottom of the lake near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
 Dry leaves of lotus (Nelumbo lutea) in caked mud of Flag Pond near Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, October 16, 2022
 White substance from animal droppings under a microscope (in KOH), collected on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 2, 2024
 Brown glass bottle with 1845 Owens Illinois mark on the bottom (brown apothecary medicine bottle, round narrow mouth prescriptions 2 oz, Alton Illinois plant 9, 1939) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021
 Partridge pea at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
 Buttonbush flower at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 Blooming buttonbush at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 Mowed path at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
 Mallow plant at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 9, 2020
 Creeping vines at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 Little green frog on a shore of Somerville Lake near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2020
 Blooming buttonbush at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 Sandy path at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
 Dodder (Cuscuta) on a shore of Somerville Lake near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2020
 Overgrown oak forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
 Vines and oaks at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
 Dead oaks with greenbrier at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
 Beaksedge, probably Rhynchospora corniculata, on a shore of Somerville Lake near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2020
 Buttonbush (Cephalanthus occidentalis) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
 Switchgrass (Panicum virgatum)(?) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2020
 Orange shoot of buttonbush at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 Passion flower and other vines at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
 Buttonbush seed head at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 Orange seeds of buttonbush at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 Butterfly pea (Centrosema virginianum) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 17, 2021
 Knotweed (Persicaria) joint on a shore of Somerville Lake near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2020
 Close-up of a little green frog on a shore of Somerville Lake near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2020
 A spider on little bluestem grass at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 Partridge pea (Cassia fasciculata) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 9, 2020
 Tickseed sunflower (Bidens) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
 Some slender seedling of pea family at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 9, 2020
 Forest overgrown by vines at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
 Spider on little bluestem grass at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 17, 2021
 Turnsole (Heliotropium indicum) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 24, 2019
 Slender vervain (verbena) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 17, 2021
 Grasshopper on bluestem grass at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 17, 2021
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