The phrase "allowed the impact of" is correct and usable in written English.
It can be used when discussing the acceptance or acknowledgment of the effects or consequences of a particular situation or action.
Example: "The new policy allowed the impact of environmental changes to be considered in future planning."
Alternatives: "permitted the effects of" or "acknowledged the influence of".
Data for periods of high and low freshwater flow allowed the impact of large-scale fluctuations implicit in both models to be determined.
Techniques borrowed from clinical trials have recently allowed the impact of publication and study-quality biases on published estimates of efficacy in animal experiments to be described.
Elimination of microbial lag effects allowed the impact of bacterial growth on salicylate transport to be quantified, which was accomplished by determining a cell mass balance.
The application of linear mixing models for three sources in the dual isotope system allowed the impact of the three different sulphate sources on particular parts of the aquifers to be calculated.
The relative control of LiDAR attributes and tree species within this dataset allowed the impact of stand structure and site conditions on GRper to be accurately assessed.
We have shown here that the synthesis of the scientific evidence has allowed the impact of vertebrate predator removal or absence on animal prey abundance in the UK to be quantified.
This procedure allows the impact of the inconsistent boundary conditions to be quantitatively assessed.
And according to a message on the Web site of Putnam Investments, "The important thing is to remain calm and not to allow the impact of this near-term occurrence to cloud a long-term perspective".
MARS is characterized by its ability to accommodate the nonlinearity in crash predictors and to allow the impact of more than one geometric variable to be simultaneously considered.
With the small-scale concentration of people, density and programs, the region could gradually be re-centered around this line, allowing the impact of this corridor to extend beyond its immediate surroundings.
