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Deltares · Jan 10, 2024 · bb53c3e · bb53c3e
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diff --git a/docs/src/changelog.md b/docs/src/changelog.md
@@ -15,7 +15,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   (BasicModelInterface.jl), including function arguments, return types and the BMI
   specification that arrays are always flattened (this was not the case for variables stored
   as 2-dimensional arrays or as vector of SVectors).
-- Bump compat for NCDatasets to 0.13.
+- Bump compat for NCDatasets to 0.13, 0.14.
+- The solution for lake outflow as part of the Modified Puls Approach. The inflow and
+  outflow variables are defined for period `Δt`, and not at `t1` and `t2` (instantaneous) as
+  in the original mass balance equation of the Modified Puls Approach. Because of this, the
+  terms of the quadratic equation (and solution) were fixed.
 
 ### Changed
 - For cyclic parameters different cyclic time inputs are supported (only one common cyclic

diff --git a/docs/src/model_docs/lateral/waterbodies.md b/docs/src/model_docs/lateral/waterbodies.md
@@ -91,8 +91,8 @@ Inserting this equation in the mass balance gives:
 The solution for Q is then:
 
 ```math
-    Q = { \left( -LF + \sqrt{LF^{2} + 2  \left( SI - \dfrac{A*H_{0}}{\Delta t} \right)
-    } \right) }^{2} \text{for } SI > \dfrac{A H_{0}}{\Delta t}  \text{ and where}\\
+    Q = { \left( \dfrac{-LF + \sqrt{LF^{2} + 4  \left( SI - \dfrac{A*H_{0}}{\Delta t} \right)}}
+    {2} \right) }^{2} \text{for } SI > \dfrac{A H_{0}}{\Delta t}  \text{ and where}\\
     LF = \dfrac{A}{\Delta t \sqrt{\alpha}} \\~\\
     Q = 0 \text{ for } SI \leq \dfrac{A*H_{0}}{\Delta t}
 ```