| PurposeFailureName | PurposeFailureDescr | LastUpdateDate |
| Dry (no water) | | 2007-09-01 |
| Flooded | Flooded | 2012-07-05 |
| Hard Bottom (no sediment) | | 2007-09-01 |
| Instrument failure | | 2007-09-01 |
| Isolated Pool | isolated pool not connected to moving water source, no flow | 2011-04-06 |
| Large rocks only | | 2007-09-01 |
| No Access | | 2007-09-01 |
| None | | 2007-09-01 |
| Not Recorded | | 2007-09-01 |
| Organisms Dead | | 2007-09-01 |
| Organisms Lost | | 2007-09-01 |
| Other (Describe in SampleComm) | | 2007-09-01 |
| Pre-Abandoned | | 2007-09-01 |
| Results Not Stored | results exist but not stored in dbase; see project management | 2011-06-07 |
| Stagnant | | 2007-09-01 |
| Taxonomy not loaded to dbase | code used for whenTemporary code to indicate when algae or benthic results are not reported/ loaded to the dbase, | 2010-10-13 |
| Too Shallow | Too shallow to collect water samples. | 2015-10-16 |