| San Ygnacio Creek | |
| Source1 Location: | Webb County, Texas |
| Mouth Location: | Lake Casa Blanca at Laredo, Texas |
| Length: | 120NaN0 |
| Source1 Elevation: | 516-1NaN-1 at source to 445-1NaN-1 at mouth |
San Ygnacio Creek is a small stream of water located in Webb County, Texas which runs through Laredo, Texas. The creek is formed northwest of Laredo, Texas and runs southwest for 120NaN0 until the creek connects to the Lake Casa Blanca. The terrain surrounding the creek is mostly clay. The vegetation surrounding the creek is mostly made up of mesquite, cacti, and grasses. San Ygnacio Creek does not cross any major highway.[1]