The best source of information on the population status of Marbled Godwit in Canada is the Breeding Bird Survey (BBS). Although the BBS provides no coverage of the population breeding in the Hudson Bay lowlands, it samples the Prairie range well and has high precision in its trends, allowing for overall medium reliability. BBS data indicate a large long-term decrease in abundance of just over 50% since 1970, with the decline starting in the late 1970s. At a regional scale, the only difference is a moderate increase along the northern fringes of the Prairie population, where overall numbers remain much smaller than in the more southern core of the range.

The goal for Marbled Godwit is to increase the population to the level it was at in the early 1970s, based on the Breeding Bird Survey. Trend data show that Marbled Godwit is currently below its goal range and continuing to decline. Analysis considering the historical population loss and recent trend suggests that it is unlikely that the goal can be met by 2050, so the interim target is to reach 75% of the goal by 2050. Achieving this target, and ultimately reaching the national goal for this species, will require deliberate conservation action.