| Watershed | Sampling Method | Sample Date | Collector(s) | Determiner |
|---|---|---|---|---|
| Uncertain | by hand | 1962-04-13 | RHighton & TSavage | unknown/unspecified |
| Uncertain | by hand | 1962-04-18 | RHighton et al. | unknown/unspecified |
| Uncertain | by hand | 1962-04-21 | RHighton & TSavage | unknown/unspecified |
| Uncertain | by hand | 1963-03-13 | TSavage_hist | unknown/unspecified |
| Uncertain | by hand | 1963-03-16 | TSavage & BLaFollette | unknown/unspecified |
| Uncertain | by hand | 1963-03-19 | BLaFollette | unknown/unspecified |
| Uncertain | by hand | 1963-03-19 | TSavage_hist | unknown/unspecified |
| Uncertain | by hand | 1963-05-11 | RHighton et al. | unknown/unspecified |
| Uncertain | by hand | 1963-09-29 | RHighton & JAngle | unknown/unspecified |
| Uncertain | by hand | 1963-11-19 | RHighton et al. | unknown/unspecified |
| Uncertain | by hand | 1963-11-19 | RHighton, TSavage & JAngle | unknown/unspecified |
| Uncertain | by hand | 1963-11-21 | RHighton & JAngle | unknown/unspecified |
| Uncertain | by hand | 1965-03-25 | RHighton & HMerchant | unknown/unspecified |
| Uncertain | by hand | 1965-03-26 | RHighton & HMerchant | unknown/unspecified |
| Uncertain | by hand | 1965-03-27 | RHighton & HMerchant | unknown/unspecified |
| Uncertain | by hand | 1965-03-28 | RHighton | unknown/unspecified |
| Uncertain | by hand | 1965-03-29 | RHighton & HMerchant | unknown/unspecified |
| Uncertain | by hand | 1969-07-07 | RHighton et al. | unknown/unspecified |
| Uncertain | by hand | 1971-10-02 | RHighton & DMorizot | unknown/unspecified |
| Uncertain | by hand | 1974-03-09 | RHighton et al. | unknown/unspecified |
| Uncertain | by hand | 1974-04-26 | RHighton & RDanstedt | unknown/unspecified |
| Uncertain | by hand | 1975-05-14 | RHighton et al. | unknown/unspecified |
| Uncertain | by hand | 1978-10-07 | RHighton & DSherry | unknown/unspecified |
| Uncertain | by hand | 1996-04-28 | RHighton & DGreen | unknown/unspecified |
| Uncertain | observed | 1998-04-22 | USGS Biologists | USGS Biologists |
| Uncertain | observed | 1998-05-05 | USGS Biologists | USGS Biologists |
| Uncertain | observed | 1998-06-11 | USGS Biologists | USGS Biologists |
| Uncertain | observed | 1999-05-06 | CKDodd, MLGriffey & JDCorser | CKDodd |
| Uncertain | observed | 1999-05-10 | USGS Biologists | USGS Biologists |
| Uncertain | observed | 2000-03-21 | USGS Biologists | USGS Biologists |
| Uncertain | observed | 2007-03-14 | JPLove | JPLove |
| Uncertain | observed | 2007-12-07 | JPLove | JPLove |
| Uncertain | observed | 2007-12-16 | JPLove | JPLove |
| Uncertain | observed | 2008-04-02 | JPLove | JPLove |