Start / Environment and legislation / Legal reserve and APP
See how much of the property goes to legal reserve and APP under the general rule, and how much is left to produce.
Pre-sizing and estimating tool: the results do not replace a design, calculation, or report signed by a qualified professional, nor verification against the applicable standards.
Technical responsibility. This calculator is under verification. The reference values and examples are hypothetical, to illustrate the calculation, and are not technical references. The user is responsible for the data entered, the choice of parameters, and the use of the results, and must validate them with a qualified professional before any decision, purchase, application, or construction work.
Legal reserve, APP and area available for production, in hectares.
Protection strip by river bank, by width; the highlighted bar is the one for your river.
Drag the controls to simulate data different from what you entered (from 30% less to 30% more) and watch the result change instantly.
Legal reserve, APP and available area for each legal reserve percentage under Law 12,651/2012, with the river and spring data you entered.
The calculation done in steps, with the values you entered.
The calculation memo gathers this page's inputs, results, equations, assumptions, and references, with fields for project, responsible person, and review. The full report also includes the charts and interpretations, in color. In the print window, choose Save as PDF.
Enter the property area, the biome or region, the average river width, the length of the watercourse within the property, and the number of springs. The calculator shows the legal reserve, the APP, and the remaining area.
500 ha property in other regions, 8 m wide river with 2,000 m course and 3 springs.
Legal reserve = 500 × 20% = 100 ha. River APP = 2,000 × 2 × 30 ÷ 10,000 = 12 ha. Spring APP = 3 × π × 50² ÷ 10,000 = 2.4 ha. Total APP = 14.4 ha. Available = 500 − 100 − 14.4 = 385.6 ha.
Because Law 12,651/2012 sets different percentages for each region: 80% for forests in the Legal Amazon, 35% for cerrado in the Legal Amazon, 20% for campos gerais in the Legal Amazon, and 20% in the other regions.
Because the law sets the protection strip based on the width of the watercourse. Wider rivers have larger strips, from 30 m up to 500 m.
No. It is an estimate for planning. Regularization depends on the CAR, a technical survey, and the environmental agency's review, which may change the result.
Generally, no. There are exceptions set out in law and state rules, which require a specific analysis. Check with the environmental agency before deciding.
Important notice: the Agrocalcs tools make estimates and preliminary sizing based on the data entered and on published engineering methods. They do not replace a design, a calculation report or a report signed by a qualified professional (CREA/ART), nor verification against the applicable technical standards and legislation, such as the Regulatory Standards of the Ministry of Labor. Material and fuel properties vary: check with the manufacturer or with analyses of your process before deciding. By using the site, you agree to the Terms of Use.
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