This might be the outlet stream to Shadow Lake.
 Digitized from film.  Digitization information:
 
 Date: 2025:09:16 20:41:40
         File: wCan_Rockies_1979_008.jpg 
Camera: PENTAX K-5 -- Lens: smc PENTAX-D FA Macro 100mm F2.8 WR at 100.0 mm -- Exposure: 1/30  f/2.8  ISO 100