"a survey where" is grammatically correct and can be used in written English.
Example: "I recently participated in a survey where they asked me about my shopping habits."
Thumbtack did a survey where they rated Louisiana with an 'A' for its friendliness to small business.
I read a survey where half of Japanese teenagers did not even know that Japan and the U.S. fought a war".
And field work involved a survey where workers of fifteen offices and residents of five houses have participated.
We resolve this problem by designing a survey where we observe the stated preferences of the respondents for hypothetical charging services.
At the end of the laboratory report students were provided with a survey where they were prompted to report their perceptions about the learning experience.
Since the results are based on a survey where multiple answers were possible, the added single percentages exceed the total of 100%[599, 60].
The Department for Education runs an annual survey, where a sample of teachers in different types of school keep a diary of their working lives.
Another highlight was during a badger survey, where I managed to get a glimpse of a badger coming out of its sett to eat in broad daylight.
The study was organised as a classroom survey, where the pupils filled a written questionnaire during two school hours.
Providing such specific data is difficult to do in a national survey but easier in a local survey where questions can be adapted (as was the case in this study).
Essentially it's a technical revision, but it is still a source survey where they ask individuals who may not know whether they are on a zero-hour contract or not".
