| Webb County School Board G-4-87366 | Proline Energy Resources Inc only | Mancho Prado (L-1) | Webb | 1 | 22.9K | 1.41M | Jan 1993 – Dec 2024 |
| Webb County School Board G-4-270826 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 17.9K | 1.65M | Aug 2013 – Apr 2026 |
| Webb County School Land 504 G-1-279363 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 17.7K | 5.53M | Apr 2016 – Apr 2026 |
| Webb County School Land 504 G-1-274956 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 16.8K | 6.5M | May 2014 – Apr 2026 |
| Webb County School Board G-4-151286 | Faulconer, Vernon E., Inc. only | Big Cowboy (Lobo) | Webb | 1 | 14K | 996K | Aug 1994 – Aug 2012 |
| Webb County School Land 504 G-1-293222 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 13.6K | 3.48M | Jun 2022 – Apr 2026 |
| Webb County School Land 504 G-1-279297 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 13.2K | 5.53M | Apr 2016 – Apr 2026 |
| Webb County School Land 504 G-1-279102 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 13K | 4M | Apr 2016 – Apr 2026 |
| Webb County School Board G-4-91576 | Proline Energy Resources Inc only | Mancho Prado (L-1) | Webb | 1 | 11.4K | 1.5M | Jan 1993 – Jan 1999 |
| Webb County School Land 504 G-1-288115 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 10.9K | 4.33M | Jan 2021 – Apr 2026 |
| Webb County School Land 504 G-1-279087 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 10.6K | 4.55M | Apr 2016 – Apr 2026 |
| Webb County School Board G-4-109792 | Faulconer, Vernon E., Inc. only | Mancho Prado (L-1) | Webb | 1 | 9.36K | 1.72M | Jan 1993 – May 2013 |
| Webb County School Land 504 G-1-279145 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 8.9K | 4.08M | Apr 2016 – Apr 2026 |
| Webb County School Board G-4-270140 | Aldine Oil and Gas, LP only | Big Cowboy (Lobo) | Webb | 1 | 8.23K | 1.15M | Mar 2013 – Apr 2026 |
| Webb County School Board G-4-151412 | Proline Energy Resources Inc only | Big Cowboy (Lobo) | Webb | 1 | 8.22K | 1.37M | Oct 1994 – Aug 2024 |
| Webb County School Board G-4-120751 | Faulconer, Vernon E., Inc. only | Big Cowboy (Lobo) | Webb | 1 | 8.07K | 667K | Jan 1993 – Feb 2011 |
| Webb County School Land 504 G-1-287700 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 7.86K | 4.63M | Jan 2021 – Apr 2026 |
| Webb County School Board G-4-270546 | Aldine Oil and Gas, LP only | Big Cowboy (Lobo) | Webb | 1 | 7.78K | 824K | Mar 2013 – Apr 2026 |
| Webb County School Board G-4-270117 | Aldine Oil and Gas, LP only | Big Cowboy (Lobo) | Webb | 1 | 7.5K | 1.03M | Jan 2013 – Apr 2026 |
| Webb County School Board G-4-270889 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 6.75K | 488K | Aug 2013 – Apr 2026 |
| Webb County School Land 504 G-1-287695 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 6.25K | 4.66M | Jan 2021 – Apr 2026 |
| Webb County School Board G-4-191705 | Faulconer, Vernon E., Inc. only | Mancho Prado (L-1) | Webb | 1 | 6.05K | 383K | Nov 2002 – Jul 2012 |
| Webb County School Board G-4-271343 | Aldine Oil and Gas, LP only | Beccero Creek (Lobo Cons.) | Webb | 1 | 6.04K | 806K | Apr 2013 – Apr 2026 |
| Webb County School Land 504 G-1-293221 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 5.68K | 4.12M | Jun 2022 – Apr 2026 |
| Webb County School Land 504 G-1-274274 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 5.2K | 11.2M | Jan 2014 – Apr 2026 |
| Webb County School Board G-4-154827 | North Central Oil Corp. only | Big Cowboy (Lobo) | Webb | 1 | 4.92K | 286K | Jun 1995 – Feb 2003 |
| Webb County School Land 504 G-1-293246 | Lewis Petro Properties, Inc. only | Hawkville (Eagleford Shale) | Webb | 1 | 4.63K | 2.98M | Jun 2022 – Apr 2026 |
| Webb County School Board G-4-123430 | North Central Oil Corp. only | Big Cowboy (Lobo) | Webb | 1 | 4.35K | 354K | Jan 1993 – Jul 1998 |
| Webb County School Board G-4-154942 | North Central Oil Corp. only | Big Cowboy (Lobo) | Webb | 1 | 3.71K | 244K | Jul 1995 – Feb 1998 |
| Webb County School Board G-4-129369 | North Central Oil Corp. only | Big Cowboy (Lobo) | Webb | 1 | 3.44K | 401K | Jan 1993 – Mar 1999 |
| Webb County School Board G-4-172532 | Proline Energy Resources Inc only | Big Cowboy (Lobo) | Webb | 1 | 2.9K | 738K | Feb 1999 – Dec 2024 |
| Webb County School Board G-4-151405 | North Central Oil Corp. only | Big Cowboy (Lobo) | Webb | 1 | 1.57K | 118K | Sep 1994 – Apr 1998 |
| Webb County School Board G-4-173370 | Proline Energy Resources Inc only | Mancho Prado (Wilcox, Lo. 7050) | Webb | 1 | 1.44K | 112K | Jun 1999 – Nov 1999 |
| Webb County School Land 1383L G-4-159883 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 1.4K | 690K | Aug 1996 – Apr 2026 |
| Webb County School Land 1384 G-4-159806 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 984 | 654K | Jul 1996 – Apr 2026 |
| Webb County G-4-65021 | Continental Exploration, L.L.C. only | Lake Casa Blanca, SE. (Lobo) | Webb | 1 | 904 | 227K | Jan 1993 – Nov 2000 |
| Wm Webb County School Land G-4-131975 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 841 | 561K | Jan 1993 – Apr 2026 |
| Wm Webb County School Land G-4-53061 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 811 | 635K | Jan 1993 – Apr 2026 |
| Webb County School Land G-4-119150 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 699 | 553K | Jan 1993 – Mar 2025 |
| Webb County School Land "1383L" G-4-170459 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 690 | 627K | Aug 1998 – Apr 2026 |
| Webb County School Land G-4-131784 | White Marlin Operating Co, LLC only | Owen (Olmos) | Webb | 1 | 687 | 207K | Jan 1993 – Sep 2008 |
| Webb County School Land 1383L G-4-166504 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 678 | 531K | Nov 1997 – Apr 2026 |
| Webb County School Land 1383 L G-4-167285 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 572 | 386K | Jan 1998 – Apr 2026 |
| Webb County School Land 1383 G-4-208795 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 560 | 294K | Apr 2005 – Apr 2026 |
| Webb County School Board G-4-194534 | Proline Energy Resources Inc only | Mancho Prado (L-1) | Webb | 1 | 492 | 170K | Apr 2003 – Aug 2024 |
| Webb County School Land G-4-117054 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 469 | 412K | Jan 1993 – Oct 2025 |
| Webb County School Lands G-4-57125 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 463 | 201K | Jan 1993 – Apr 2026 |
| Webb County School Land 1383L G-4-209795 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 408 | 198K | Mar 2005 – Apr 2026 |
| Webb County School Land 1383L G-4-211500 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 397 | 199K | Jun 2005 – Apr 2026 |
| Webb County School Land G-4-113863 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 347 | 435K | Jan 1993 – Nov 2018 |